ACS Athens (American Community Schools) vs Costeas-Geitonas School

	A ACS Athens (American Community Schools) Athens, Greece	C Costeas-Geitonas School Athens, Greece
Snapshot	Snapshot
Fees / year	Fees / year €11,393	Fees / year €8,400 - 13,600
Age range	Age range 3 - 18 years	Age range 3 - 18 years
Type	Type Co-educational	Type Co-educational
Curriculum	Curriculum American Curriculum, IB (DP), Advanced Placement (AP)	Curriculum IB (PYP), IB (MYP), IB (DP)
Pupils	Pupils 1,206	Pupils —
Typical class size	Typical class size —	Typical class size —
Instruction language	Instruction language English	Instruction language English
Opened	Opened 1945	Opened 1973
Bus service	Bus service Yes	Bus service Yes
Essentials	Essentials
Location	Location ACS Athens is located in the northern Athens suburb of Chalandri (Halandri), on the foothills of the Hymettus mountain, about 5 km from central Athens. The campus address is 129 Aghias Paraskevis Ave. & Kazantzaki Street, Halandri 15234, Athens, Greece. It is accessible by road and is near the Aghias Paraskevi metro station.	Location CGS is located in Pallini, Attikis, 15351, Greece. The Pallini area is part of the Attica region near Athens. The campus is accessible by local roads and is served by CGS's transportation services.
Stages	Stages Early Childhood (ages 3-5); Elementary School (Grades 1-5); Middle School (Grades 6-8); Academy (Grades 9-12); ACS Athens Virtual.	Stages Pre-School & Kindergarten / IB PYP; Primary School / IB PYP; Middle School / IB MYP; High School; IB Diploma Programme
School type	School type Private nonprofit international day school	School type The school is one of Greece's oldest and most prestigious private schools.
Pupil nationality mix	Pupil nationality mix —	Pupil nationality mix —
Additional learning support	Additional learning support Language Support ESL/EFL across all three schools; Optimal Learning Support provides accommodations for mild learning differences, subject to availability.	Additional learning support CGS provides inclusive education with a School Counseling Department (SCD) and a Learning Support Team (LST) to support students with learning, social and emotional needs, medical conditions, or mobility challenges. The SCD offers counseling and a range of support services; accommodations include differentiated instruction, extended time, and individualized support plans as needed.
Country affiliation	Country affiliation American	Country affiliation Greece
Religious affiliation	Religious affiliation —	Religious affiliation —
School day structure	School day structure The Middle School Bell Schedule for 2025-2026 shows the day starts at 9:00 and ends at 3:45, with multiple instructional periods, short passing times, and a lunch period; schedules vary by division.	School day structure —
Bus service details	Bus service details Bus services are contracted by ACS Athens parents and cover virtually the entire Athens area. Buses are supervised by monitors and are not door-to-door. For 2025-2026, bus prices are €1,404 (Zone A), €1,860 (Zone B), and €2,100 (Zone C). After-school late buses are available for Grades 6-12 at no charge, with published routes; a Transportation Contract and Waiver forms are provided for families.	Bus service details CGS offers a bus service with defined transport zones (Zone A–Zone E) and corresponding costs for the 2025–2026 academic year.
Fees	Fees
Fee details	Fee details Application / Admission Fees - A non-refundable application fee is charged at the time the application is submitted: €100 for the first child and €50 for each additional child. Tuition and mandatory fees (academic year 2026–2027) Pre-School (PJ–JK) - Semester 1: €5,384.00; Semester 2: €3,666.00; Total: €9,050.00. - Tuition: €3,666.00 per semester (total €7,332.00). - Textbook fee: €90.00 (one semester charge shown as Semester 1). - Technology fee: €71.00 (one-time/semester charge shown as Semester 1). - Capital assessment fee: €297.00 (one-time/semester charge shown as Semester 1). - Registration fee payable for this entry grade: €221.00 (one-time). - Institutional tuition (per family): €341.00 (one-time). - Special Project Assessment (per family): €698.00 (one-time). - Payment due dates: August 26, 2026 and January 8, 2027. Kindergarten (PJ–K transition shown separately) - Semester 1: €6,555.50; Semester 2: €4,837.50; Total: €11,393.00. - Tuition: €4,837.50 per semester (total €9,675.00). - Textbook fee: €90.00; Technology fee: €71.00; Capital assessment fee: €297.00. - Registration fee payable for this entry grade: €221.00. - Institutional tuition (per family): €341.00. - Special Project Assessment (per family): €698.00. - Payment due dates: August 26, 2026 and January 8, 2027. Elementary School (Grades 1–5) - Semester 1: €7,639.50; Semester 2: €6,142.50; Total: €13,782.00. - Tuition: €6,142.50 per semester (total €12,285.00). - Textbook fee: €90.00; Technology fee: €71.00; Capital assessment fee: €297.00. - Registration fee payable for this entry grade: €221.00. - Institutional tuition (per family): €341.00. - Special Project Assessment (per family): €698.00. - Payment due dates: August 26, 2026 and January 8, 2027. Middle School (Grades 6–8) - Semester 1: €8,224.00; Semester 2: €6,674.00; Total: €14,898.00. - Tuition: €6,674.00 per semester (total €13,348.00). - Textbook fee: €143.00; Technology fee: €71.00; Capital assessment fee: €297.00. - Registration fee payable for this entry grade: €221.00. - Institutional tuition (per family): €341.00. - Special Project Assessment (per family): €698.00. - Payment due dates: August 26, 2026 and January 8, 2027. High School / Academy (Grades 9–12) - Semester 1: €9,008.00; Semester 2: €7,340.00; Total: €16,348.00. - Tuition: €7,340.00 per semester (total €14,680.00). - Textbook fee: €261.00; Technology fee: €71.00; Capital assessment fee: €297.00. - Registration fee payable for this entry grade: €221.00. - Institutional tuition (per family): €341.00. - Special Project Assessment (per family): €698.00. - Payment due dates: August 26, 2026 and January 8, 2027. Registration fee schedule per new student (one-time, payable with first semester tuition) - Junior Kindergarten entry: €221 (continuing into Kindergarten remains €221; continuing into Grade 1 shows higher transition fee tiers). - Kindergarten entry: €221 (with specific transition-tier amounts shown for continuation into Grade 1). - Entry at Grades 1–12: €963 (one-time for those entry grades where applicable). - The registration fee is paid together with the first semester tuition. Additional regular / optional fees and charges - Textbook fees: included as level-specific textbook charges listed above (amounts vary by division). - Technology fee: level-specific (commonly €71.00 shown for divisions). - Capital assessment fee: level-specific (commonly €297.00 shown for divisions). - Institutional tuition (per family) and Special Project Assessment (per family): family-level charges applied in Semester 1 for each enrolled family (amounts shown above). - Learning Commons / after-school academic support (per semester): elementary homework support and middle/academy homework and math support are charged per semester (examples: Elementary homework support €432–€1,050 per semester depending on days enrolled; Middle/Aca homework support €500–€1,500 per semester depending on days; math support values shown separately). Payments are to the school bank account by the first week of each semester. - Day Care (PJ–JK extended program until 15:45): €1,846.00 annually (€923.00 per semester). - Special Support Services (annual): EFL/ESL €1,576; Optimal Learning Support (Standard) €2,386; Consultation €595; ISP €238. Shadow teaching arranged separately between parent/guardian and shadow teacher. Special services are paid by semester on the same dates as tuition. - IB Program fees: IB Full Diploma (two-year) €1,400; IB Certificate fees: up to four classes €226; more than four classes €452. Greek IB Diploma equivalency annual program amounts are listed separately. IB fees are paid once with the first semester tuition. - Transportation (school bus): published zone-based annual fees apply (example published figures for the 2025–2026 transport year: Zone A €1,404; Zone B €1,860; Zone C €2,100). One-way, pre-school reduced rate and special terms may apply; bus contractor payment and no-refund-on-termination terms are in force for bus contracts. Payments to the bus contractor are handled separately from school tuition. - Summer program and activity fees: summer camp and sports camps are charged per session with their own published cancellation/refund rules and payment methods. Example summer camp session prices are published per session/week. Billing schedule and payment terms - Standard semester payment dates for the tuition schedule: first-semester payments are due by August 26, 2026; second-semester payments are due by January 8, 2027 (semester due dates shown with the tuition figures). - Parents/legal guardians must pay tuition and fees in advance of each semester start. The school does not issue separate invoices for tuition amounts and dates; the cashier's office may be contacted for clarification. A finance charge of 0.5% per month applies to unpaid balances after the first day of each semester. Installment plans may be possible via the Cashier's office; an interest charge of 0.5% per month applies to installment payments. The school may refuse class attendance for students whose semester tuition and applicable fees have not been paid, and may initiate legal action for fees more than 30 days overdue. Refund and withdrawal rules - Registration, capital, technology and institutional family fees are non-refundable. Special Services, Pre-School, Textbook and IB fees are non-refundable for the quarter in which a student withdraws; refunds may be given for subsequent full quarters not attended. Tuition is non-refundable for the quarter in which the student withdraws; refunds are applicable for following quarters that the student will not attend. Force majeure closures do not entitle payors to tuition refunds. Transportation contracts may carry separate no-refund terms for contract termination due to departure. Boarding - ACS Athens operates as a non-boarding (day) school; boarding fees do not apply. Fee payment options and bank/payment procedures - Accepted payment methods include direct bank deposits/wire transfers (Euro accounts with IBANs provided), DIAS electronic payments (Greek bank system), credit-card payments via the school Cashier POS or Alpha Bank secure web payment links (VISA/MasterCard), checks, and authorized web banking channels. Specific school bank IBANs, SWIFT/BIC details and US wire/Flagstar instructions are published for cashier use. DIAS payment transaction codes can be requested from the Cashier. Bank charges and currency-conversion differences are the payor's responsibility; USD payments are converted to EUR at the date of transaction. Payment details and cashier procedures are handled by the Finance Office / Cashier's office. Other practical notes on fees - Textbooks issued by the Bookstore must be returned at year end; lost or damaged textbooks are charged at replacement cost. Bookstore and activity-specific payment instructions apply for after-school programs and sports academies. Learning Commons and other co-curricular tuitions are payable per semester to the school bank account by the first week of each semester. (End of fees overview)	Fee details Overview (Academic year 2025–2026) Application & registration fees - Application fee (one-off, non‑refundable): EUR 50. - New‑student registration fee (one‑off, non‑refundable): EUR 150. Annual tuition by year group (gross annual amount) and typical payment instalments - Pre‑K4 / Kindergarten (ages 4–6): EUR 8,400 per year. Instalments under the standard schedule: 1st instalment (40%): EUR 3,360; 2nd instalment (30%): EUR 2,520; 3rd instalment (30%): EUR 2,520. - Primary School (Grades 1–6): EUR 8,500 per year. Instalments: 1st (40%): EUR 3,400; 2nd (30%): EUR 2,550; 3rd (30%): EUR 2,550. - Junior High / Middle School (Grades 7–9): EUR 8,980 per year. Instalments: 1st (40%): EUR 3,592; 2nd (30%): EUR 2,694; 3rd (30%): EUR 2,694. - Senior High (Grade 10): EUR 8,980 per year. Instalments: 1st (40%): EUR 3,592; 2nd (30%): EUR 2,694; 3rd (30%): EUR 2,694. - Senior High (Grades 11–12): EUR 9,200 per year. Instalments: 1st (40%): EUR 3,680; 2nd (30%): EUR 2,760; 3rd (30%): EUR 2,760. - IB Diploma Programme (Year 1): EUR 13,600 per year. Instalments: 1st (40%): EUR 5,440; 2nd (30%): EUR 4,080; 3rd (30%): EUR 4,080. - IB Diploma Programme (Year 2): EUR 13,300 per year. Instalments: 1st (40%): EUR 5,320; 2nd (30%): EUR 3,990; 3rd (30%): EUR 3,990. How instalments and deposit are handled - Standard instalment schedule: first payment 40% of the total, second payment 30%, third payment 30%. - A registration deposit is required at enrolment and is deducted from the first instalment: EUR 1,600 per student for most year groups; EUR 2,000 per student for IB Diploma Programme entrants. The deposit is payable upon completion of registration. - Families may choose to pay annually; a 3% discount applies for full annual prepayment when made by the stated prepayment date. Billing schedule and payment terms (dates used for scheduling and invoicing) - Invoicing periods and standard due dates: 1st instalment due mid‑September, 2nd instalment mid‑December, 3rd instalment mid‑March. Invoices are issued before the provision of the service and are produced up to the 10th working day of each month. - Specific instalment dates used in the published schedule: 15 September (1st instalment, 40%), 15 December (2nd instalment, 30%), 15 March (3rd instalment, 30%). The deposit is credited against the first instalment. Transport (school bus) fees - Annual transport fees by zone (charged in September): Zone A EUR 1,400; Zone B EUR 1,600; Zone C EUR 1,800; Zone D EUR 1,900; Zone E EUR 2,100. A 50% discount is available for single‑direction use where space permits. Transport fees are billed annually. Food service / catering fees - Food service fees (annual): 1 day/week EUR 275; 2 days/week EUR 545; 3 days/week EUR 815; 4 days/week EUR 1,075; 5 days/week EUR 1,250. For younger grades where meals are included, this is reflected in the tuition. Food service cancellations require one month's notice. Other compulsory or recurring charges - Inspired Metaverse fee: EUR 50 annually (charged in October) for the listed grade groups. - IB examination charge (applies to IB Diploma exam year): EUR 750 annually (charged in November) where applicable. - Afternoon zone (SMART) activities, extracurricular activities, school trips, external events, academic contest fees, university‑application support and other optional services are charged separately when used; these are billed per period or per event as applicable. Uniforms, books and materials - School uniform and consumable educational materials are not included in the published tuition figures and are charged separately. Sibling discounts and other discounts - Sibling discounts (non‑combinable and applied to the younger child): second child receives 8% off tuition of the compulsory programme; third child receives 40% off tuition of the compulsory programme and 50% off transport; fourth child receives 100% (tuition and transport). - The 3% prepayment discount for full annual payment is available when the full amount is settled by the stated prepayment deadline. Refunds and cancellation terms - Application fee and the one‑off new‑student registration fee are non‑refundable. - Deposit refund on cancellation of registration before the start of the academic year: 100% refund if cancellation occurs by the specified early deadline; 50% refund if cancelled by the subsequent deadline; no refund of the deposit after the final deadline. Advance notice periods and exact calendar cutoff dates are used to determine eligibility for refund. - For termination of schooling or termination of transport service during the year, one term's prior written notice is required. For termination of catering, one month's prior written notice is required. Refunds or credits are handled in line with billing and invoicing procedures. Payment methods accepted - Payments may be made by bank transfer or by debit/credit card. Invoices are issued prior to service provision and adjustments are made via credit notes where applicable. Notes on additional charges and timing - Certain optional programmes and activity fees are announced before the start of the school year and charged when the activity takes place; SMART (afternoon zone) enrolment is term‑based and requires commitment for the full term. Changes in SMART enrolment in the first term are generally permitted up to the specified change deadline without charge. (End of fee overview)
Diving deeper	Diving deeper
Boarding arrangements	Boarding arrangements —	Boarding arrangements —
Uniform requirement	Uniform requirement The school requires a standard P.E. uniform with summer and winter sets. PE attire includes a House T-shirt and a cotton or lycra T-shirt with shorts for summer; winter options include hooded sweatshirt, zipper hooded sweatshirt, sweatpants and leggings.	Uniform requirement —
Food options	Food options The school retains two air-conditioned cafeterias: the main cafeteria by the Theater lobby and an Elementary School cafeteria for Elementary students. Gefsinus manages the Middle/High School and Elementary School food services. The meals come from certified suppliers and are prepared in compliance with current EU and Greek legislation.	Food options CGS operates a dining hall serving full-course meals prepared on site daily under the guidance of a school dietician; nuts are not used and seasonal vegetables are organically grown. A vegetarian menu is available on request, and canteens on all levels offer snacks and beverages, with dietary needs sent to the dietician.
House system	House system The school has a House System with Macedonians, Athenians and Trojans. House points are awarded to students, parents, guardians, faculty and staff for participation in school events, aiming to connect the ACS Athens community and support academic, social and ethical development.	House system —
Governance and ownership	Governance and ownership ACS Athens is a not-for-profit organization governed by a Board of Trustees. The Board is a permanent policy leadership body responsible for strategic planning, advocacy and oversight; an Advisory Council provides expertise to governance and leadership.	Governance and ownership CGS is governed by a Board of Directors. It is part of Inspired Education Group.
Academics	Academics
Curriculum details	Curriculum details The school offers the American Diploma (MSA-CESS accredited) with a requirement of twenty-six Carnegie Units earned over eight semesters for the Academy Diploma. The International Baccalaureate Diploma (IB Diploma) is offered for grades 11–12, with six subject groups and core requirements (Theory of Knowledge, Extended Essay, and CAS). The Advanced Placement (AP) Program is available with AP courses such as AP Calculus, AP Environmental Science, and AP Spanish. The language of instruction is English, with Greek taught as a second language.	Curriculum details CGS offers the International Baccalaureate (IB) programmes: Primary Years Programme (PYP), Middle Years Programme (MYP), and Diploma Programme (DP). In the PYP, Greek is the primary language of instruction with English as the secondary language of instruction. CGS provides all three IB programmes for students aged 3–18.
Student teacher ratio	Student teacher ratio 9:1.	Student teacher ratio —
Exam results	Exam results The IB Diploma is awarded by the IBO after May external examinations, with assessments that include both internal and external components and a scoring system that culminates in the 1–7 scale per subject and a total score; a minimum of 24 points is typically required for the IB Diploma. 95%–100% of ACS Athens students are accepted to U.S., British, and other universities worldwide, with scholarships totaling about $1.3 million awarded to the Class of 2022.	Exam results Class of 2025 IB Diploma Programme results: 100% awarded the IB Diploma; average overall score 36.1 out of 45; two students achieved 45/45; 17% scored 40+; 72% scored 35+; 83% were admitted to their first-choice university; 40% were admitted to a Top 150 university.
Higher education progression	Higher education progression University acceptances are reported at 95%–100% of students, with approximately $1.3 million in college scholarships awarded to the Class of 2022.	Higher education progression Graduates gain admission to universities worldwide. For the Class of 2025, 83% were admitted to their first-choice university and 40% to a Top 150 university. University placements include Ludwig Maximilian University of Munich (LMU), KU Leuven, University of Amsterdam, Trinity College Dublin, and Bocconi University, among others.
Gifted and talented	Gifted and talented The ACS Athens Scholar Diploma is a four-year program awarded to students who complete authentic ACS Athens honors courses, a Senior Honors Research Project, and meaningful community service; it includes four integrated interdisciplinary courses and may include International Baccalaureate and Advanced Placement courses.	Gifted and talented CGS Academia provides enrichment for highly motivated students with high academic performance. The programme offers subjects such as Astrophysics, Visual Arts, Creative Writing, Philosophy, Programming, and Public Speaking. Eligibility includes a GPA of the previous year equal to or greater than 18 and 7/14, with at least four nominations by the subject groups in the grade.
Academic calendar	Academic calendar —	Academic calendar —
Wellbeing & support	Wellbeing & support
Social & emotional learning	Social & emotional learning The Center for Student Success provides counseling, social-emotional support, college guidance and activity/interest group/community service guidance. The school values a holistic, meaningful and harmonious education. School counselors and wellness specialists are integral to student life. Through the counseling offices, students know that they will find an advocate, as well as a safe place for discussion about their grades, their lives, or their future goals and aspirations. ACS Athens works to provide a place of belonging, trust and care for all its students, and staff are committed to educating students and the community about child safety and responsible personal and social behaviors.	Social & emotional learning CGS has Counselling Support Services that promote students' personal development, mental and social well-being, and learning. Experiential activities support social and emotional development at all levels. In the early years, preventive programs focus on emotion recognition and social skills; in later years topics include cyberbullying, identity, and career guidance. Classroom observation helps identify learning strengths and needs and inform support plans. The School Counseling Department includes School Psychologists, a Speech Therapist, an Occupational Therapist and Learning Support Teachers who collaborate with families and teachers to support students.
Special educational needs (SEN)	Special educational needs (SEN) Optimal Learning Program (OLP) offers learning support and testing accommodations to students with documented mild learning differences. Accommodations allow students to learn the same material using different methods without changing the instructional level or content. Optimal Learning Support services are offered subject to availability. Shadow Teachers provide additional support to OLP students, helping fill in learning gaps, build self-confidence and promote positive classroom interaction. LEP (Learning Enhancement Program) provides after-school homework and math support in small groups to empower students to become confident, independent learners.	Special educational needs (SEN) CGS has a Learning Support Programme that provides diagnosis, remedial education and targeted support for learners with learning difficulties. The programme supports the learner individually to bolster self-esteem, educates teachers on coping with learning differences, informs parents about the policy, and provides in-class monitoring and support in collaboration with teachers. The School Counseling Department addresses learning challenges and emotional, social and behavioral needs, and includes staff who work with families to develop appropriate support plans. Early identification and inclusive practices are embedded in CGS's inclusion framework.
English as an additional language	English as an additional language The ESL/EFL Program supports English-language learners in building skills in English for a variety of purposes. ESL/EFL language development and learning support classes are provided at three levels according to English competence, following international placement standards. Across schools, ESL/EFL classes focus on reading, writing, listening and speaking. In Elementary School there are three levels per grade (A, B, C) with an Elementary ESL Foundation Program that combines language development with content-focused Flex-Support sessions. In Middle School, a two-year foundation program (EFL 1 and EFL 2) precedes ESL 1 or ESL 2, and in the Academy there are ESL Intermediate and ESL Advanced options, with language development tied to media literacy and IELTS exit preparation. A standardized exit test is offered twice a year to confirm level and readiness to mainstream.	English as an additional language From age 3 to 6, the languages of instruction are Modern Greek and English; English is taught as an additional language. English as a Language Acquisition course is mandatory for all students, and from age 8 (Grade 3) students choose a second additional language (French, German or Spanish). In the Middle Years Programme, learners receive language teaching in at least two languages, with Modern Greek as Language and Literature and English as Language and Literature or Language Acquisition, and a second additional language from MYP2. In the Diploma Programme, English is the language of instruction, with other languages offered as Group 2 courses (English, French, German, Spanish).
Mental wellbeing	Mental wellbeing Wellness is provided by the Wellness Center, offering social-emotional support to students JK-12 in confidentiality, individually or in small groups. The program encourages thinking about health across four domains: physical, social, emotional and cognitive. The Wellness framework includes guided reflection and routines to support healthy daily practices and overall well-being.	Mental wellbeing CGS supports students' mental and social well-being through Counselling services that accompany academic learning. Experiential activities promote social-emotional skills across the school, with targeted support for emotional needs and pathways to additional assessment when necessary.
Safeguarding	Safeguarding ACS Athens is a student-centered international school, with staff committed to child safety and responsible personal and social behaviors. When there is reasonable cause to believe a child is suffering or at significant risk, staff must report the suspected incidents to appropriate school personnel. Authorized personnel follow up on all referrals. The school provides a Child Protection Protocol Handbook and maintains safeguarding policies and procedures in line with best educational practices and local law.	Safeguarding CGS follows the Whole School Inclusion Policy to ensure safe, inclusive education and early identification of learning, emotional and social needs. The School Counseling Department provides support for learning, social, emotional, behavioral, medical, mobility and speech-related needs, and comprises School Psychologists, a Speech Therapist, an Occupational Therapist and Learning Support Teachers. The policy emphasizes collaboration with families and ongoing staff development to implement inclusive practices and accommodations in assessments in line with Greek Ministry of Education and IB policies.
Safeguarding policy	Safeguarding policy —	Safeguarding policy —
Facilities	Facilities
Facilities overview	Facilities overview ACS Athens is organized into Kindergarten, Elementary, Middle School, and Academy divisions on a single campus. The campus features four Kindergarten classrooms, twenty Elementary classrooms, sixteen Middle School classrooms, and twenty-eight Academy classrooms, along with learning support spaces, language classrooms, a library, and a Learning Commons. The Sabbagh Library and Learning Commons host the Math & Science Studio, Writing & Research Studio, Media Studio, and Incubator to support collaborative, inquiry-based learning. The Academy, Middle School, and other facilities include fully equipped science laboratories, computer labs, modern art and music spaces, a theater, and a reception area. Safety and sustainability features include a full health office, three emergency huts, a Greek fire protection system, and upgraded LED lighting and eco-friendly heating.	Facilities overview CGS sits on a 67,000 m2 campus with exceptional facilities. It has 103 teaching classrooms, 3 science laboratories, 6 computer labs, Interactive Discovery & Activity Walls, and a Research & Media Library with over 25,000 holdings. Outdoor facilities include an Outdoor Amphitheater, a Music Conservatory, a Dance Studio, a Visual Arts Studio, and a Radio Station. The campus features 2 indoor heated pools, an outdoor stadium and track, 4 basketball courts, a tennis & handball court, a Bookstore, a Restaurant & Club House, and 57 school buses.
Sports facilities	Sports facilities ACS Athens offers a comprehensive athletic complex. The Indoor Gym has a modern basketball/volleyball court, a TÜV-certified climbing wall, a weight room, and boys' and girls' locker rooms. The Soccer Field features artificial turf with a running track and a long jump facility, plus a large multipurpose area. The Indoor Pool is heated with five lanes, maintained daily, with weekly water testing. Four tennis courts and outdoor basketball and volleyball courts provide additional play spaces.	Sports facilities The school has two indoor heated pools, an outdoor stadium and track, four basketball courts, and a tennis and handball court.
Academic facilities	Academic facilities Classrooms support all divisions with four Kindergarten rooms, twenty Elementary rooms, sixteen Middle School rooms, and twenty-eight Academy rooms. The Learning Commons houses the Sabbagh Library along with the Math & Science Studio, Writing & Research Studio, Media Studio, and Incubator to support inquiry-based work. Fully equipped science laboratories, a computer lab, a modern art room, a music room, and foreign language classrooms are available across the divisions. Learning Support classrooms support differentiated instruction through the Optimal Learning Program. The Academy also includes a Media Production Studio and a Theater & Reception area to support arts and performance across the curriculum.	Academic facilities The school has 103 teaching classrooms, 3 science laboratories, 6 computer labs, Interactive Discovery & Activity Walls, and a Research & Media Library with over 25,000 holdings.
Extra curricular facilities	Extra curricular facilities Incubator is a student-centered, student-led project-based learning initiative using the design process to explore ideas. ISCI offers services including the After School Assistance Program (ASAP), workshops on Arduino, 3D printing, startups, and entrepreneurship, summits at ACS Athens and other schools, research assistance, funding opportunities, and study groups. The Media Studio is a state-of-the-art, green screen TV studio for curriculum-based and creative multimedia projects. The Theater Hall and the Music and Dance rooms support performing arts, alongside other arts-based spaces. Incubator-backed activities and ISCI workshops foster cross-curricular collaboration and student led initiatives.	Extra curricular facilities The school has a Music Conservatory, a Dance Studio, a Visual Arts Studio, and a Radio Station. It has an Outdoor Amphitheater and an Outdoor Stadium and Track to support performances and sports. Sports-based programs include the Elite Athlete Programme, Juventus Academy Athens, CGS Triathlon Club, and CGS Fencing Cup. The Duke of Edinburgh International Award is offered as part of extracurricular opportunities. The Visual Arts Workshop and Conservatory support arts education beyond regular classes, while CGS Summer and CGS Academia provide additional learning opportunities.
Parent experience	Parent experience
History	History The school began in 1945 as the British Army School, was renamed to the Anglo-American School in 1949, and has been known as the American Community Schools of Athens (ACS Athens) since 1954.	History CGS opened in September 1973 in Marousi with 330 students. In September 1981, new premises were inaugurated in Pallini, Attiki. The school became an official University of London GCE Test Centre in August 1993 and established the International Baccalaureate Diploma Programme in September 1994. The Athletic & Cultural Centre opened in 2003, the Alumni Association was re-established in 2005, and CGS rebranded as CGS in 2016. CGS Ellinikon was announced in 2022 with a Memorandum of Understanding to create a new primary and secondary organization, and first CGS Ellinikon students are expected in September 2026.
Community	Community The ACS Athens community includes a Parent Teacher Organization (PTO) that represents about 60 nationalities. The PTO Board is made up of eight members and a teacher representative from each school, and its mission is to Connect, Support, and Inform parents, faculty, and students on campus and online. The PTO connects the community through meetings and events and communicates through school-wide emails, Facebook, the ACS Athens Community Share Page, the LED bulletin board, and other channels. It hosts monthly Parent/Principal Meetings and a PTO General Meeting and organizes yearly events such as Welcome Back BBQ, Halloween Pumpkin Sales, Christmas Bazaar, Teacher Appreciation Week, Spring Games, and The Spring Fair. The PTO contributes to ACS Athens by funding classroom starboards, computer labs, mobile laptop units, student lockers, a future gymnasium floor, books, and DVDs, and it also arranges parent excursions and charity drives and publishes a monthly newsletter. All ACS parents are automatic PTO members, and volunteering is encouraged to support students and the school community.	Community CGS has an Alumni Association re-established in 2005 with over 4,000 active members. The Parents & Guardians Association and the Athletic Association are integral parts of CGS, contributing to daily life and community ties. CGS hosts events such as the CGS Educational Conference in 2018, SPARK Summer Science Courses with Brown University starting in 2015, and Juventus Soccer Schools. Harvard Graduate School of Education Professional Development seminars for Primary Level teachers were held in 2009.
Parent teacher association	Parent teacher association The school has a Parent Teacher Organization (PTO). The PTO Board is eight members strong and includes a teacher representative from each school, with a mission to Connect, Support, and Inform parents, faculty, and students on campus and online. It holds monthly Parent/Principal Meetings and a PTO General Meeting, and its activities include annual events such as Welcome Back BBQ, Halloween Pumpkin Sales, Christmas Bazaar, Teacher Appreciation Week, Spring Games, and The Spring Fair. Through its efforts, the PTO funds and supports school resources (classroom starboards, computer labs, laptop units, student lockers, gymnasium floor, books, DVDs), coordinates excursions and charity drives, and publishes a monthly newsletter; all ACS parents are members by default, and volunteering is encouraged. The PTO By-Laws and Constitution guide its purpose and governance, including facilitating communication between parents and the school.	Parent teacher association CGS has the Parents & Guardians Association that works with the school on activities and events. The CGS Alumni Association is a network of graduates that supports members and fosters social and professional connections, numbering over 3,500 members. The CGS Athletic Association supports CGS sports and athletic activities. The CGS Parents Association has an online presence as CGS Parents and works to involve families in school life. These associations strengthen the bonds within the CGS family and support school initiatives.
Extra-curricular	Extra-curricular
Academic & intellectual	Academic & intellectual ACS Athens offers a broad slate of academy groups and clubs for Middle and High School. Clubs include ACS Debate Club, Forensics, Model United Nations (MUN), National Honors Society (NHS), Psychology Club, Science Club, Astronomy Club, Intersection: Where Biology Meets Psychology, Art Club and Fiber Arts. Moon Camp Pioneers Club and Moon Camp Challenge, along with TedEd Club and Group Discussion, provide additional avenues for inquiry, collaboration and competition. NHS and IB Visual Arts Club offer leadership and opportunities to showcase student work.	Academic & intellectual The Junior Elite Athlete Programme is based on the International Baccalaureate Middle Years Programme, and the Elite Athlete Programme is based on the International Baccalaureate Diploma Programme or the Greek General Lyceum. Both are tailor-made educational programmes for students who combine high academic achievement with top athletic performance, delivered through close collaboration between CGS's academic and athletic faculties. The programmes enable daily training in selected sports under top coaches while maintaining a flexible curriculum to accommodate matches and assessments. Guidance and counselling on prospective careers, universities and countries of study are provided.
Arts & creative	Arts & creative The Arts program comprises Visual Arts, Music and Performing Arts. Students study drawing, painting, writing, speaking, singing and instrument playing; they create and present projects and performances. The program emphasizes creativity, self-expression, critical thinking, collaboration and communication across disciplines.	Arts & creative The Conservatory offers quality music education with options from individual instrument tuition to theory, solfège, and ensembles, and it prepares students for university musicology studies. Courses are available to students from Kindergarten age up to adults. Student concerts are performed at CGS or other venues, and educational events and seminars with eminent musicians are regularly held.
Cultural & language	Cultural & language Arabic Club is offered; Model United Nations (MUN) and the Koinwnos group support cultural engagement. Intersection: Where Biology Meets Psychology connects science and culture. These clubs complement language and cultural exchange among students.	Cultural & language CGS MUN organizes international Model United Nations conferences. The 20th CGS MUN conference took place December 12–14, 2025. Preparation resources and a governance structure including a Secretariat and student officers support participants.
Social & hobbies	Social & hobbies A wide range of social and hobby clubs exists, including Chess Club, Ping Pong Club, Art Club, Moon Camp Pioneers Club, Moon Camp Challenge, 3x3 Basketball (NEW), Flag Football, Ultimate Frisbee Club and TedEd Club. The Senior, Junior and inter-school groups foster discussion, collaboration and creative expression outside the classroom.	Social & hobbies CGS Triathlon Club trains in triathlon, running, and swimming and participates in inter-club and national events. The Juventus Academy Athens provides football training through Juventus Soccer Schools. The CGS Academies page lists Football, Basketball, Volleyball, Fencing, and Swimming as CGS sports clubs.
Community & service	Community & service Love & Serve Without Borders & Boundaries is a student service club. The Elderly Support Club focuses on community outreach and volunteering. These activities supplement classroom learning with service to others.	Community & service Duke of Edinburgh International Award is offered in collaboration with CGS. The CGS Sports Association organizes sports competitions, seminars, meetings and events promoting fair play and the well-being of body and mind, and participates in competitions organized by third parties.
Leadership & professional	Leadership & professional Student leadership is fostered through National Honors Society (NHS), the IB Student Council and Model United Nations (MUN). Grade-level student councils include 9th-, 10th-, 11th- and 12th-grade StuCo, providing opportunities to lead and organize school initiatives.	Leadership & professional Guidance and counselling on prospective careers, universities and countries of study are provided. The Duke of Edinburgh International Award is a CGS collaboration that fosters leadership and personal development.
Lifestyle & wellbeing	Lifestyle & wellbeing Athletics and recreational activities form a core part of student life. Competitive sports include Flag Football and 3v3 Basketball (NEW), plus the Ultimate Frisbee Club. Recreational options include After School Swimming and other wellness-oriented activities as part of the Athletics & Activities program.	Lifestyle & wellbeing Morning training sessions are held up to a maximum of 6 hours per week. The Elite Athlete Programme offers a flexible curriculum, transport by bus, and lunch on training days, plus courses in techniques, tactics, conditioning, emotional support and diet. The CGS Sports Association supports a broad range of clubs—Football, Basketball, Volleyball, Fencing, Swimming—promoting physical development and well-being.
Language provision	Language provision
Language provision	Language provision The official instruction language in all grades is American English, with modern language classes in Greek, French, German, Chinese, Spanish, etc. English language support classes are available from 1st grade. ESL placement uses CEFR and WIDA, with standardized testing administered twice a year to document growth.	Language provision Within the timetabled day, CGS offers English, French, German and Spanish; Chinese is available as an extracurricular course. Modern Greek is the official language of instruction for Elementary and Secondary; English is taught as an additional language, and the Diploma Programme is taught in English. From ages 3–6, instruction is bilingual in Modern Greek and English in the Early Years; literacy in Greek and English is emphasized across the school.
Bilingual teaching	Bilingual teaching —	Bilingual teaching Dual-language environment in Pre-K and Kindergarten (Modern Greek and English). In Elementary and Secondary, Modern Greek is the official language of instruction; the Diploma Programme is taught in English. English is taught as an additional language within the PYP, MYP and DP, and students study at least two languages in the PYP.
Immersion programs	Immersion programs The English as a Second Language (ESL) program provides immersion for English Language Learners. ESL courses focus on developing reading, writing, listening, and speaking skills and are offered for students in grades 9 and 10. Standardized assessments track progress to determine when students can mainstream into mainstream classes.	Immersion programs From ages 3–6, instruction is in Modern Greek and English in the Early Years, supporting a dual-language Kindergarten and Nursery. In the PYP, English is an additional language and students begin selecting a second language (French, German or Spanish) from Grade 3. In the MYP, students study at least two languages, including Modern Greek and English, with a second additional language option. The Diploma Programme is taught in English.
Reputation	Reputation
Awards	Awards —	Awards —
Accreditations	Accreditations Middle States Association of Colleges and Schools (MSA-CESS) accreditation, valid until 2029.	Accreditations —
Admissions	Admissions
Admissions	Admissions ACS Athens accepts applications throughout the academic year. The Application Process at a glance includes five steps: Step 1: Submit an Application Form for each applicant with the required documents and pay a non-refundable application fee of 100€ for the first child and 50€ for each additional child. Step 2: Submit required documentation. Step 3: Arrange Admissions Testing for Grades 6-12 or Interview/Assessment for Grades PJ-5. Step 4: The Application file is reviewed by the Admissions Committee and decisions are communicated by email. Step 5: Registration and scheduling after admission. Admissibility is determined by how well the student aligns with the school's academic standards and space availability; factors include prior academic history, disciplinary or socio-emotional issues, and classroom size. ACS Athens reserves the right to deny admission if the needs cannot be met. All applicants entering Grades 6-12 must take English and Math tests (on campus or online). English proficiency by grade is: Grade 6: CEFR A2; Grade 7: A2; Grade 8: B1; Grade 9: B1; Grade 10: B2; Grades 11-12: C1. The U.S. High School Diploma can be awarded to transfer students who have spent at least two years in the American education system. Academic credit transfer allows up to seven credits per grade level for transfers into Grades 9-10. IB Diploma Applicants must meet the ACS Athens American High School Diploma credit requirements and the C1 English Proficiency level.	Admissions IB Mission Statement: The International Baccalaureate aims to develop inquiring, knowledgeable and caring young people who help to create a better and more peaceful world through intercultural understanding and respect. To this end the organization works with schools, governments and international organizations to develop challenging programmes of international education and rigorous assessment. School Mission Statement: At CGS we strive to provide an academic setting where every student's skills and character can flourish to the fullest by encouraging meaningful connections between classroom and real life experiences. Our students work in an environment of ongoing inquiry, cooperation and mutual respect as they acquire a high caliber education and positive life attitudes to make a contribution to the world they live in. Philosophy: Our aspiration is to enroll children and parents who match our educational philosophy, learning culture, ethos and values. The school is committed to the principle of equal opportunity in education, and therefore accepts students without discrimination of gender, colour, race, religion or nationality. CGS is a multi-level and multi-faceted school offering the following programmes: Pre-K4 (ages 4 – 5) – IB Primary Years Programme; Kindergarten (ages 5 – 6) – IB Primary Years Programme; Primary School – IB Primary Years Programme (ages 6 – 12); Middle School- 1st grade of High School – IB Middle Years Programme (ages 12-16); High School – 2nd-3rd grade of Lyceum (ages 16-18); International Baccalaureate Diploma Programme (ages 16 – 18). Admission criteria: Applications for admission are received throughout the school year. An offer of admission is made based on availability, are in accordance with the school's policies and Greek Ministry of Education regulations. Admission criteria are based on age, academic skills, attitude to learning, and candidate's personal profile, taking into consideration the overall dynamics of our existing classes. Based on the year level and language proficiency, testing and screening for placement purposes will take different forms, including, but not limited to, consideration of academic performance records, a personal interview, school readiness testing, literacy and numeracy proficiency testing and a review of previous special needs documentation and health records. Within this framework, admission is based on: interview with the candidate; candidate's performance in diagnostic assessment tasks, designed according to age and grade requirements; candidate's previous academic records, where applicable; a pedagogical report completed by the candidate's current teacher(s)/school, where applicable; a signed declaration by at least one of the parents/guardians of the candidate, which is GDPR compliant and would inform the school of all known or diagnosed special educational needs, is required. Accordingly, professional evaluations, along with details of extra educational, emotional and/or social support the candidate is receiving, should also be provided at the time of application. Failure to provide the required documentation in due time may result in the cancellation of admission. Admission decisions: All applications are reviewed by the Admissions Committee, which consists of the head of the level for which the candidate is applying, programme coordinators, Head of Admissions office and representatives from CGS School Counseling Department (SCD). Special consideration is given to eligible applicants who are siblings of currently enrolled students and to CGS staff and CGS alumni families. However, an offer is not guaranteed, as it is subject to standard Admissions procedure. CGS reserves the right to decide against proceeding with the enrollment of a candidate in consideration of learning support resources' availability and in accordance with the school's Policies. In case significant social / emotional / behavioral issues or learning differences arise during the enrollment process at the school, there will be close consultation with parents, and it is possible that accommodations, to allow the student to enroll at CGS may be required. Consequently, additional costs for this service may be incurred. This review may also involve requiring parents to seek external evaluation by an external body. In case the Admissions Committee determines that CGS is unable to support a student's needs, or if parents are unwilling to proceed with the student's evaluation, CGS reserves the right to terminate the enrollment procedure. Once the application is complete, including receipt of school records and confidential recommendations (previous academic records, pedagogical reports, etc.), offers are formally made either via telephone or e-mail within two weeks. Confirmation of offer & enrollment: Offers for admission are to be accepted or rejected by candidate families within one week of receipt by contacting the Admissions office. Once the offer has been accepted, parents will be sent an acceptance letter as well as a Registration Approval Form (RAF). In order to confirm enrollment and reserve a place for the admitted applicant, completion of the RAF and payment of the registration fee (in accordance with the school's fees) are due within 10 days of receipt of the acceptance letter. These commitments must be made on a timely basis so that we guarantee that places are held for admitted applicants who indeed wish to enroll, or we may allocate places to other candidates in the wait pool. Partial refunds are made within specific deadlines in accordance with the school's fee policy. Class Placement: It is our policy to make initial tentative placements of students in classes for the coming year, according to a set of clear and fairly managed criteria, which include: Academic range and balance; Balance between new and returning students; Behaviour issues; Friendships / optimal peer relationships; Gender (in order to maintain a balance in the class); Size of the class; Special needs requirements within the class; Teacher's professional judgement / experience / detailed knowledge of child, considering academic and personal abilities and needs. These recommendations are given very careful consideration by the teachers and will remain tentative until after the arrival and assessment of new students is completed at the commencement of the next year. Reserved places: Special consideration is given to eligible applicants who are siblings of currently enrolled students and the offspring of CGS alumni. Nevertheless, admission is not automatic, and it is dependent on the number of applicants and the number of spaces available in each particular grade, as well as the qualifications of each applicant. Wait pool: When the number of eligible applicants exceeds the availability of spaces for a particular grade, students may be placed in a wait pool until a place becomes available. Effort is made to keep parents of applicants in the wait pool updated regarding enrollment status and to confirm whether they wish to remain in the wait pool. For further information on the enrollment procedure please follow the link: Enrollment Procedure. Review process of CGS whole-school admissions policy: The CGS whole-school Admissions policy has been reviewed following discussions among Programme Coordinators, Principals, Head of School Counseling Department, Head of Admissions office and the Head of school. The review process was completed in June 2022. Tuition fee: Tuition Fees \| Academic Year 2025 - 2026. Pre-K4/IB PYP (4-5 years) 8,400 €; Kindergarten/IB PYP (5-6 years) 8,400 €; Primary School / IB PYP (Grade 1-6) 8,500 € per grade; Junior High School / IB MYP (Grade 7-9) 8,980 € per grade; Senior High School (Grade 10-12) 8,980–9,200 € per grade; IB Diploma Programme (Year 1) 13,600 €, (Year 2) 13,300 €; Transportation (2025-2026) listed by zone; Food Service options and weekly rates are provided. Transportation details include Zone A, B, C, D, and E with corresponding costs. Attachments include CGS Admissions Policy 2022-23 and related materials. Transportation, food service and other fees are also enumerated.
Scholarships	Scholarships The Christos M. Perakis Academic Scholarship exists at ACS Athens. Eligibility requires admission to ACS Athens before scholarship consideration. Criteria include academic excellence with a GPA of 3.5 or 18 and above; Greek school attendance and Greek citizenship; Fluent in English; Demonstrates leadership; intends to pursue studies abroad in Global Management, Communications or Computer Sciences; Demonstrates conscious citizenship; Demonstrates financial need; Provides a personal statement; Finalists participate in an in-person interview. This scholarship refers to the 2026-2027 academic year (begins September 2026) and is for high school students only (grades 9-12). It can be applied toward tuition at ACS Athens.	Scholarships Financial Aid and Scholarship Fund: CGS is offering academic scholarships for the academic year 2026-27. The scholarships are awarded to students who will be attending A' Gymnasium / MYP2, A' Lyceum / MYP5 and the IB Diploma Programme for the academic year 2026-2027. A maximum of 5 Full Scholarships for A' Gymnasium / MYP2; A maximum of 2 Full Scholarships for A' Lyceum / MYP5; 1 Full and a maximum of 3 Partial Scholarships for the IB Diploma Programme. The granting of a Full Scholarship requires an average score of 80% or higher and success in the personal interview (the student profile is consistent with the International Baccalaureate definition for students attending its programmes). The granting of a Partial Scholarship (30%-80%) requires an average score of 60% or higher (the top 10 candidates with the highest score of over 60%) and success in the personal interview (the student profile is consistent with the International Baccalaureate definition for students attending its programmes). Date of Scholarship Exams (Written component): Sunday 7th March 2026. Deadline for submission of application: Tuesday 3rd March 2026. Arrival Time: 8:30-9:00 a.m. Start Time: 9:30 a.m. Duration of Written Exams: 3 hours (1 hour per subject). Candidates will be assessed in the following courses: A' Gymnasium / MYP2: Mathematics (1 hour), Modern Greek Language (1 hour), English (1 hour). IB Diploma Programme (Subjects Duration): English (Part A: Reading Comprehension; Part B: Composition) 1 hour; Mathematics (Part A: 8-10 MCQs; Part B: 4-5 analytical exercises) 1 hour; Critical thinking test (5 MC exercises in English) 30 minutes. Candidates are not tested on specific material; the applicant's previous study should suffice. To participate, applicants must complete the Academic Scholarship Application Form and submit it with the required documents to the Financial Aid and Scholarship Fund by 1pm Tuesday 3 March 2026. Scholarship Application Form for CGS Students; Scholarship Application Form for non-CGS students. For more information: scholarship@cgs.edu.gr. Attachments include sample exam papers for various subjects and levels.
Waitlist	Waitlist —	Waitlist When the number of eligible applicants exceeds the availability of spaces for a particular grade, students may be placed in a wait pool until a place becomes available. Effort is made to keep parents of applicants in the wait pool updated regarding enrollment status and to confirm whether they wish to remain in the wait pool.
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