Oeiras International School vs St. Dominic's International School

	O Oeiras International School Lisbon, Portugal	S St. Dominic's International School Lisbon, Portugal
Snapshot	Snapshot
Fees / year	Fees / year €14,962 - 24,844	Fees / year €11,500 - 22,000
Age range	Age range 6 - 18 years	Age range 3 - 18 years
Type	Type Co-educational	Type Co-educational
Curriculum	Curriculum IB (PYP), IB (MYP), IB (DP)	Curriculum IB (PYP), IB (MYP), IB (DP)
Pupils	Pupils 463	Pupils 668
Typical class size	Typical class size 16	Typical class size 22
Instruction language	Instruction language English	Instruction language English
Opened	Opened 2010	Opened 1975
Bus service	Bus service Yes	Bus service No
Essentials	Essentials
Location	Location Oeiras International School is located in Oeiras, Portugal, on land leased from the municipality. Oeiras is about 15 minutes by car from Lisbon and the Lisbon airport.	Location Rua Maria Brown, Outeiro de Polima, 2785-816 São Domingos de Rana, Portugal. Alvará No. 2178 of 10/09/1975 was issued by the Ministério da Educação e Cultura. St. Dominic's International School is part of the International Schools Partnership (ISP), a global network of schools.
Stages	Stages Primary Years Programme (Age 5-11), Middle Years Programme (Age 11-16), Diploma Programme (Age 16-19).	Stages The Junior School comprises eight grade levels including the Early Years (Nursery, Kindergarten and Reception). The school offers the International Baccalaureate Primary Years Programme (PYP), Middle Years Programme (MYP) and Diploma Programme (IBDP).
School type	School type Oeiras International School is a non-profit Association (OIS, ASFL) founded by parents and is an International Baccalaureate World School.	School type St. Dominic's International School is an IB World School offering the full IB Continuum (PYP, MYP, DP) for students aged 3 to 18.
Pupil nationality mix	Pupil nationality mix Nationalities represented: 48+.	Pupil nationality mix —
Additional learning support	Additional learning support A learning support programme exists as part of OIS's inclusive IB World School approach. Applicants with severe emotional needs cannot be catered for.	Additional learning support Personalised programmes to support students with learning difficulties and for students who are new to the English language.
Country affiliation	Country affiliation —	Country affiliation Portugal
Religious affiliation	Religious affiliation —	Religious affiliation Catholic (Dominican Sisters)
School day structure	School day structure School buses arrive with students between 8:00am and 8:15am. Afternoon buses depart at 4:00pm and 5:30pm.	School day structure Junior School Day runs from 8:20 to 15:30 with eight 40‑minute periods and a 60‑minute lunch; Senior School Day runs from 8:40 to 15:50 with eight 40‑minute periods and a 60‑minute lunch.
Bus service details	Bus service details The School runs its own bus routes from Cascais, Estoril, Sintra, Parede and the Lisbon area.	Bus service details School bus service is available for registered students; bus routes cover Lisboa Este–Bobadela, Expo, Miraflores, Linda-a-Velha and Oeiras; Lisboa/Algés–Areeiro, Restelo and Algés; Lisboa–Praça de Espanha, Alto dos Moinhos, Alfornelos, Queluz and Massamá; Cascais–Cascais, Qta. da Marinha, Qta. da Bicuda, Aldeia de Juzo; Estoril–Alcabideche, Estoril, Parede and Carcavelos; Odivelas–Odivelas. Barraqueiro Transportes operates the service; enrolment is for the full year and requests after September 15 are subject to availability.
Fees	Fees
Fee details	Fee details Application and Registration Fees - Application fee (one-time, paid at application): €250. - Registration fee (one‑time, payable on enrolment according to the schedule below): amounts vary by year group (see Tuition by year group). The registration charge is non‑refundable. Tuition fees (per term and per year, by year group) - Years 1–4 (Pre‑PYP and PYP 1, 2 & 3): Registration €1,355; Term €4,064; Annual €13,547. - Year 5 (PYP 4): Registration €1,413; Term €4,238; Annual €14,127. - Year 6 (PYP 5): Registration €1,683; Term €5,049; Annual €16,830. - Years 7–9 (MYP 1, 2 & 3): Registration €1,799; Term €5,396; Annual €17,987. - Years 10–11 (MYP 4 & 5): Registration €2,127; Term €6,382; Annual €21,273. - Year 12 (DP 1): Registration €2,171; Term €6,514; Annual €21,713. - Year 13 (DP 2 — two terms only): Registration €2,171; Term €9,771; Annual €21,713. Additional one‑off and recurring fees - Capital levy (one‑time, non‑refundable for new entrants): one new student €5,000; two siblings starting in the same year €7,500; three or more siblings starting in the same year €8,500. Current families enrolling a new student receive a 10% discount on the capital levy. - Annual insurance per student: €20. - Yearbook (per family): €40. - Examination charges: Year 11 IB‑MYP assessment €900 (billed with Term II); Year 13 IB‑DP assessment €900 (billed with Term II). Transport and Meals (charged separately, invoiced per term) - School transportation (invoiced per term): one way €525; two ways €840. - School meals (invoiced per term; price per meal): €6.30 per day (includes soup, salad, a main course, dessert/fruit and a low‑sugar drink). Discounts and fines - Sibling discounts on tuition term fees: second child 5%; third child 15%; fourth child and subsequent children 25%. Annual tuition paid in advance before the posted deadline receives a 2.5% discount (deadline is communicated by the school). Discounts apply only to term fees and are annulled if fees are not paid on schedule. - Fines and charges: damaged or unreturned library books charged at replacement cost plus a 15% surcharge; lost team equipment €100; lost student card €5. Late payments incur legal taxes of 4% and may lead to suspension of services. Billing schedule and payment terms - Fees are invoiced by term. Payment deadlines: Registration by February 1; Term I by July 1; Term II by December 1; Term III by April 1. Termly fees are payable within 30 days of invoice. Further delay may result in suspension of services and legal late charges. Refunds and withdrawal notice - The registration charge is non‑refundable. Once registration is completed the student is deemed enrolled; if a registered student does not attend, Term I fees remain payable. The school requires one term's written notice to the Principal for withdrawal; without this notice the corresponding term fees remain due. Boarding - Boarding is not offered; the school operates as a day school. Accepted payment methods and payment details - Bank transfer (details provided by the school; ensure transfers are made net of bank charges and the student's name is given to allocate funds). IBAN and BIC/SWIFT details are used for euro payments. - Payment by check is accepted (payable to Oeiras International School ASFL). Other notes on fees - Application fee is a one‑time mandatory administrative charge for applicants. Capital levy and registration charges are one‑time entry costs and are non‑refundable. Certain exam and event charges are billed with specific term invoices as noted above.	Fee details Application and Registration Fees - A Registration fee (annual) and a one‑time Capital Levy are payable when a place is confirmed. The Capital Levy is €5,000 (one‑off). The school requires payment of the Registration Fees, comprising the Annual Registration and the applicable Capital Levy, to confirm admission. Tuition fees by year group (annual and per term) - Kindergarten 1 (age 3): Annual €11,500 — Per term €3,833 (annual ÷ 3). - Kindergarten 2 (age 4): Annual €11,800 — Per term €3,933 (annual ÷ 3). - Kindergarten 3 (age 5): Annual €13,000 — Per term €4,333 (annual ÷ 3). - Grade 1 (age 6): Annual €14,200 — Per term €4,733 (annual ÷ 3). - Grade 2 (age 7): Annual €14,400 — Per term €4,800 (annual ÷ 3). - Grade 3 (age 8): Annual €14,600 — Per term €4,867 (annual ÷ 3). - Grade 4 (age 9): Annual €14,900 — Per term €4,967 (annual ÷ 3). - Grade 5 (age 10): Annual €15,000 — Per term €5,000 (annual ÷ 3). - Grade 6 (age 11): Annual €17,100 — Per term €5,700 (annual ÷ 3). - Grade 7 (age 12): Annual €17,200 — Per term €5,733 (annual ÷ 3). - Grade 8 (age 13): Annual €17,400 — Per term €5,800 (annual ÷ 3). - Grade 9 (age 14): Annual €20,500 — Per term €6,833 (annual ÷ 3). - Grade 10 (age 15): Annual €20,500 — Per term €6,833 (annual ÷ 3). - Grade 11 (age 16): Annual €22,000 — Per term €7,333 (annual ÷ 3). - Grade 12 (age 17): Annual €22,000 — Per term €7,333 (annual ÷ 3). (Note: the school invoices three times per year; the per‑term figures above are the annual fee divided by three and are shown to give per‑term amounts consistent with the school's termly billing structure.) First‑year total for new families - For a new enrolment the first year total includes the one‑time Capital Levy plus the annual tuition. Example: Kindergarten 1 first‑year total €11,500 (annual tuition) + €5,000 (Capital Levy) = €16,500. Billing schedule and payment terms - Termly payment schedule: Term 1, Term 2 and Term 3 payments are required; the school publishes specific due dates for each term (Term 1 due 1 July 2026; Term 2 due 1 December 2026; Term 3 due 1 March 2027). An annual payment option is available with an advanced‑payment discount of 5% if paid prior to the school's published deadline. Late payments incur staged interest/penalties (for example 5% for 30–60 days late; 10% for 60–90 days late; more than 90 days may incur 10% plus possible legal proceedings). The school invoices and requires payment by the stated due dates. Boarding fees (if applicable) - St. Dominic's operates as a day school; it does not publish boarding provision or boarding fees for this campus. Other costs and fees - IB examination fees (for IBDP and certain external examinations) are not included in the tuition and are charged separately for candidates in the relevant grades. - International sports, cultural and academic trip costs are not included in tuition and are invoiced separately when arranged. - After‑school (extra‑curricular) activities led by external providers carry additional charges. Co‑curricular activities led by school staff are stated as free of charge. - Annual bus service: bus registration is for the full year, withdrawal from the annual bus service is not allowed, and bus fees are treated as non‑refundable once paid. Routes are managed through the school's contracted transport partner. - Uniforms: all uniform items are purchased at the designated supplier (El Corte Inglés, Avenida António Augusto Aguiar 31, Lisbon). Uniform purchase is an additional parental expense; the school does not publish fixed uniform pricing on its public pages. - Summer school, supervision and incidental charges: summer‑programme fees and certain supervision charges (for example late pick‑up penalties) are charged separately as shown in the school's summer‑school materials. Refunds and withdrawal policy - One full term's notice (90 days) is required to withdraw a student during the academic year. If the required notice is not given, tuition for the following term will be charged in lieu of notice. Capital Levy, Tuition Fees, Registration Fees, and Annual Bus Fees are non‑refundable once paid. The school's published policy also states that any payments made for examinations or trips will first be used to settle outstanding tuition fees; refunds and pro‑rations are governed by the school's formal fee and withdrawal rules. Fee payment options (published information) - The school issues invoices and sets due dates and penalties; specific accepted payment methods (for example bank transfer, credit/debit card, SEPA direct debit) are not published in detail on the publicly available fee pages. Parents receive billing information and invoice terms through the admissions and administration process. Notes for families (practical points) - Tuition fees are stated to include school materials, some local field trips and school accident insurance; they do not include major international trips or IB examination fees. Annual fees are reviewed and may change from year to year. Bus service must be registered for the full year and is billed separately. Sibling discounts are published in fee summaries (the school database summary shows typical sibling discounts of 5% for a second child, 15% for a third child and 25% for fourth and subsequent children).
Diving deeper	Diving deeper
Boarding arrangements	Boarding arrangements —	Boarding arrangements Day school; a school bus service is available for registered students for the full year.
Uniform requirement	Uniform requirement The school uniform is required for all students in Years 2 to 11. Everyday uniform for Years 2-11 includes grey trousers or skirt, white polo shirt, grey socks or tights, all black shoes, a light blue jumper, a grey hoodie, a blue fleece, and outerwear as needed. The P.E. uniform, or team uniform and tracksuit, is compulsory for all sporting activities and travel to events; House T-shirts are worn only for House activities.	Uniform requirement Uniforms are required for all students; items are purchased at El Corte Inglés in Lisbon. Junior School (Nursery–Grade 5) wear the full uniform at school and on outings, with a mandatory PE uniform. Senior School (Grades 6–10) wear the full uniform at school and on specified field trips; BYOD applies from Grade 6; Grades 11–12 dress smart casual.
Food options	Food options Healthy meals are provided daily through Origem, with vegetarian and vegan options; menus include soup, salad, a main course (meat, fish or vegetarian), fruit or dessert, and a low-sugar juice or water. Microwaves and picnic areas are available for meals brought from home, and an on‑campus coffee shop offers snacks and Portuguese treats.	Food options Gertal coordinates all meals served at the school; there is a Refectory and a Tuck Shop on campus.
House system	House system On joining OIS, families are assigned to one of four Houses—Kingfisher, Phantom, João Baptista or Vulpes. There are house competitions in sport, arts and academics, with points contributing to the end‑of‑year House Trophy.	House system —
Governance and ownership	Governance and ownership Oeiras International School (OIS, ASFL) is a not‑for‑profit association founded in 2009 by 30 parents and associates. The Board, elected by the Associates, oversees governance; the school reinvests revenue into facilities and staff as there are no owners or shareholders.	Governance and ownership Part of International Schools Partnership (ISP).
Academics	Academics
Curriculum details	Curriculum details OIS offers the International Baccalaureate Continuum: Primary Years Programme (PYP) for ages 6 to 10 (PYP1 to PYP5), Middle Years Programme (MYP) for ages 11 to 16 (MYP1 to MYP5), and Diploma Programme (DP) for ages 17 to 18 (DP1, DP2). The school is an IB World School authorised to offer PYP, MYP and DP. PYP is an inquiry-based learning programme for children aged 6 to 10. MYP builds on prior learning and leads to the MYP certificate. The DP is internationally recognised for university admissions.	Curriculum details The school offers the IB Continuum of education: PYP, MYP and DP. The Primary Years Programme is delivered Nursery to Grade 5 as a transdisciplinary, inquiry-based approach with six transdisciplinary themes. The Middle Years Programme covers Grade 6 to 10 and bridges PYP and DP, using Global Contexts and including Service as Action and the Personal Project, across eight subject groups. The Diploma Programme is for Grade 11 and 12, with core elements Theory of Knowledge, Creativity, Action and Service and the Extended Essay, across six subject groups; DP Courses are offered as well. The school is authorized to offer the full IB Continuum.
Student teacher ratio	Student teacher ratio 1:6 teacher to student; average class size 16.	Student teacher ratio —
Exam results	Exam results IB Diploma Results show high achievement. In 2021, 45 DP candidates with a 100% pass rate and an average DP grade of 5.6; OIS average points were 35, compared with a world average of 32.98. In 2020, 29 DP candidates with a 93% pass rate and an average grade of 5.12; OIS average points 32 versus world average 31.3.	Exam results The highest DP score awarded to a candidate has been 45. The number of Diploma candidates has more than doubled in the last four years, and the average DP grade has risen. Graduates have gained places at top universities including Monash University (Australia), Universidade Católica Portuguesa, KU Leuven (Belgium), the University of Kent, the University of Edinburgh, the University of Glasgow, Imperial College London and the University of Coimbra.
Higher education progression	Higher education progression Graduates go to universities around the world, including notable destinations in the UK, the USA and other countries such as King's College London, University College London, Imperial College London, Stanford University, University of Chicago, McGill University, University of Toronto and the University of Auckland.	Higher education progression Graduates have pursued higher education primarily at UK universities, with expanding options across Europe. Examples include Aberdeen University (Psychology); Brunel University London (Global Challenges with Innovation); City, University of London (Mathematics and Finance). Additional destinations include Durham University (Criminology), University of Edinburgh (Vet Medicine), University of Glasgow (Neuroscience), Imperial College London (Electrical and Electronic Engineering), and Universidade de Coimbra (Pharmacy Biomedical).
Gifted and talented	Gifted and talented —	Gifted and talented —
Academic calendar	Academic calendar —	Academic calendar —
Wellbeing & support	Wellbeing & support
Social & emotional learning	Social & emotional learning Belonging, inclusion, and physical and emotional safety are foundational to learning at OIS. The Behaviour Policy aligns with the IB Learner Profile to guide respectful interactions and everyday practice. The school provides equal education opportunities and a non-discriminatory environment. A safe, caring environment supports students' social and emotional development.	Social & emotional learning St. Dominic's has a Pastoral Support programme that emphasises supportive relationships between students and staff, and among students. The Pastoral Care Programme includes the Tutor Programme, new student inclusion programmes, community and service projects, and sports competitions. Its three main objectives are to balance a student's cognitive, emotional and social life; develop self-reliance through self-confidence and self-awareness; and support and enhance the curriculum so learning extends beyond the classroom. The approach provides personalised attention to support academic and personal growth. Pastoral care fosters wellbeing and social development across the school.
Special educational needs (SEN)	Special educational needs (SEN) A learning support programme exists as part of OIS's inclusive IB World School approach. Applicants with severe emotional and intellectual needs cannot be catered for.	Special educational needs (SEN) The Learning Support at St. Dominic's is a whole-school responsibility aimed at helping students achieve their full academic potential. An individualized approach is provided, tailored to each student's needs in the classroom and in small groups. An experienced team of psychologists and special education specialists delivers counselling and psychoeducational support. The school collaborates with local specialists, including speech and occupational therapists, to address specific needs. The team supports students across all grade levels, working with mainstream teachers, teaching assistants and parents to achieve the best possible outcomes.
English as an additional language	English as an additional language The language of instruction is English. Portuguese and English are core languages studied. German, French, Spanish and Mandarin Chinese are offered as first languages and as language acquisition options. In the MYP, language acquisition is taught for three lessons per week. All potential students undertake an English placement test to determine language development.	English as an additional language English as an Additional Language (EAL) support welcomes students from around the world, with an EAL department dedicated to integrating learners into an English-speaking environment. The four language skills—reading, writing, listening and speaking—are treated as interconnected in a holistic approach. After assessing each student's language needs, a programme is designed to support academic success, which may include in-class support, differentiated lessons and targeted English skills lessons. EAL classes are generally small, with EAL teachers working alongside class teachers to plan, teach and assess understanding of the curriculum. EAL assessment takes place during the first week to determine whether EAL classes are required, and EAL classes are available for students from Grade 1 to Grade 10.
Mental wellbeing	Mental wellbeing Wellbeing is a central focus, with Wellbeing Awareness Year celebrating wellbeing topics monthly and involving school psychologists in talks on resilience and mental health. One Tribe Week explicitly focused on belonging and mental health, with mixed-age activities and staff support. Tutors, teachers, the nurse, student support and the psychologist are available to help as needed.	Mental wellbeing Mental wellbeing is supported through a robust pastoral framework and the Learning Support team. The Pastoral Care Programme focuses on relationships, wellbeing and personal growth, including the Tutor Programme, new student inclusion, community and service projects and sports, to foster balance and resilience. The three aims are to balance cognitive, emotional and social life; develop self-confidence and self-awareness; and support and extend the curriculum beyond the classroom. The Learning Support team comprises psychologists and specialists who provide counselling and psychoeducational support and may collaborate with external professionals such as speech and occupational therapists to support wellbeing and learning. The combined pastoral and learning support aims help students develop self-confidence, resilience and holistic growth.
Safeguarding	Safeguarding The school protects the rights of all children, following Portuguese law and the United Nations Convention on the Rights of the Child. A Child Protection and Safeguarding Policy guides how safeguarding concerns are handled, with mechanisms to react and respond if abuse is noticed or reported.	Safeguarding —
Safeguarding policy	Safeguarding policy —	Safeguarding policy —
Facilities	Facilities
Facilities overview	Facilities overview The Quinta is the main campus, a 17th-century Portuguese farm with a river, woodlands and green spaces. The Palace houses the library, science labs, and art and music rooms. The Pavilion contains exam classrooms, and the White/Orange Building includes the assembly area, a small gym, classrooms, staff rooms, a cafeteria and computer labs. The PYP building hosts Years 2–4, and campus gardens grow food for social projects while resident goats, donkeys and bees are part of the farm. There is a swimming pool on site, and future plans include a science and technology suite and a purpose-built PYP block. Outdoor spaces include a basketball court, football pitch and a multisport pavilion.	Facilities overview The campus is a green, open‑air environment located about 25 kilometres from Lisbon and near the shore, providing a safe, peaceful setting that fosters community and enhances student life.
Sports facilities	Sports facilities There is a basketball court, a football pitch and a multisport pavilion. A swimming pool is on site. The campus offers tracks for mountain biking, as well as skateboarding and rollerblading. A cross-country course hosts inter-school tournaments.	Sports facilities Two multi‑use gymnasiums and areas for football, basketball, volleyball, tennis and badminton.
Academic facilities	Academic facilities The Palace houses the library, science labs, and art and music rooms. The Pavilion is the latest building with several classrooms. The White/Orange Building contains the main assembly area, a small gym, classrooms, staff rooms, a cafeteria and the computer labs.	Academic facilities 82 fully equipped classrooms, two well‑resourced libraries, multiple science, technology and computer laboratories, and dedicated art, music and drama rooms.
Extra curricular facilities	Extra curricular facilities Co-Curricular Activities run on Wednesdays (MYP) and Thursdays (PYP) with choices that change each term. Learn-to-Swim uses the Barcarena pool. CCAs include Robotics, Game Development, Arts Therapy, Mix It Up, Board Games, Ceramics, Multi Sports, Skateboarding, Yearbook Club, Parkour, Entrepreneurs' Club, Percussion, Journalism/Valley Times and School Production.	Extra curricular facilities SDIS Educational Garden project creates an outdoor green space for students; initially available to Junior School students for two half‑days per week.
Parent experience	Parent experience
History	History Moved to Barcarena, Oeiras in September 2011, Oeiras International School is housed in the Quinta de Nossa Senhora da Conceição, a 17th-century estate built by João Baptista Sinel de Cordes. The Sinel de Cordes family coat of arms is visible at the main gate. The property remained in the family until 1969 when it was sold to a Belgian, later becoming part of the Oeiras Council estate and ultimately the home of OIS. OIS is committed to nurturing a learning community to shape a sustainable world.	History 1639 marks the beginning of the Irish Dominican Sisters' history in Portugal, when they came to the country due to persecution. They brought their philosophy of education and its values to Portugal in the 1600s, and St. Dominic's International School continues this tradition. The Dominicans, the Order of Preachers, are committed to education and base their philosophy on Veritas, the search for truth. On 15 January 2010, St. Dominic's International School was officially owned and managed by Veritas Educatio, SA, which established a Board of Governors. The school has been an IB World School since 1997, offering Diploma, Middle Years and Primary Years programmes.
Community	Community Oeiras International School has an active community with Alumni, Student Houses, Uniform, Co-curricular Activities, and a Student Council, plus a broad After-School Activities (ASA) program offering music, arts, sciences and sports. The ASA program includes a Camp Go outdoor-education partnership to provide hands-on experiences outside the classroom. The school's Parents Club coordinates social and cultural events, including coffee mornings, cultural trips, Winter Wonderland, Arraial and Halloween, as well as fundraisers and wellness activities for families.	Community St. Dominic's is an IB World School in Portugal, offering holistic international education for students aged 3 to 18. The school has a diverse international community and inclusivity at its heart, with every person bringing value to the community. Learning is ageless and empowering, taking place in the classroom and beyond, guided by curiosity, questions, action, and shared findings, and we cooperate with our community to make connections.
Parent teacher association	Parent teacher association The school has a Parents Club run by parent volunteers, which organizes social and cultural events, coffee mornings, cultural trips, family events such as Winter Wonderland, Arraial and Halloween, bake sales and fundraisers, and monthly cultural trips. The school also has a Parent Council, introduced in early 2023 to provide a representative voice for parents and guardians, and to partner with teachers and school leadership. The Parent Council operates the OIS Community Portal for proposals; its mission is to strengthen communication, provide mentorship opportunities, and create community-driven solutions. Representatives are elected annually to ensure a diverse and inclusive team.	Parent teacher association The positive relationships between parents, students and teachers are the foundation of our learning environment. The PTA is a dedicated group of parents and staff who meet regularly to maintain open communication on matters affecting student well-being and development. The PTA organises social events that bring the community together, including the Welcome Barbecue, the Christmas Fair and International Day. These activities strengthen the school community and raise funds for important school projects. For more information about PTA opportunities, contact [email protected].
Extra-curricular	Extra-curricular
Academic & intellectual	Academic & intellectual The school offers a range of co-curricular activities that develop academic and intellectual skills, including Robotics and Game Development, as well as Journalism/Valley Times and the Yearbook Club. PYP CCAs include Arts Therapy, General Motor Skills, Mix it Up, and Learn-to-Swim, while MYP CCAs include Art Club, Entrepreneurs' Club, Percussion Club, Parkour, Journalism, Multi-Sports, School Production, Skateboarding, and Yearbook Club. The Duke of Edinburgh Award provides a structured program focusing on volunteering, physical activity and skills, with expeditions, and OIS participates in Model United Nations activities.	Academic & intellectual The school offers the International Baccalaureate continuum (PYP, MYP, DP). The MYP includes Service as Action and Personal Projects, with opportunities such as Model United Nations. The IB framework promotes inquiry, international-mindedness and collaboration across the curriculum.
Arts & creative	Arts & creative Arts-focused activities include Arts Therapy, Ceramics, Film Making & Creative Writing, Art Club and School Production. Sewing Club, Creative Jewellery Club, and Strings Club are also offered as part of the ASA program, along with a range of music-related sessions.	Arts & creative The school's arts program is vibrant and central to school life. Drama includes theatre trips and performances at venues such as the Centro Cultural de Belém and Teatro Nacional D. Maria II. Visual Arts and Music activities include out-of-school workshops, museum visits, Jazz Concerts and IB Diploma Concerts with students from other international schools.
Cultural & language	Cultural & language English and Portuguese are core languages; German, French, Spanish and Mandarin Chinese are offered as additional language options both as first language and language acquisition. Global citizenship and intercultural learning are integrated into OIS's approach, with wellbeing, ethics and respect for diverse contexts. OIS participates in Model United Nations activities, including COP Oeiras Valley simulations and MUN conferences.	Cultural & language The school supports students from around the world through English as an Additional Language (EAL). EAL helps students integrate into an English-speaking environment and develop confidence in reading, writing, listening and speaking. Classes are generally small, with individual teacher support, and are available for students from Grade 1 to Grade 10.
Social & hobbies	Social & hobbies The After-School Activities (ASA) and Musical Instrument Lessons (MIL) program offers a wide range of pursuits across music, arts, sciences, life skills and combat sports. Current ASA activities include Instrument Clubs, Arts Therapy, Board Games, Ceramics, Film Making & Creative Writing, Robotics & Beyond, Surfing, Skateboarding, OIS Orcas Swimming Academy, and more. Registrations open after the ASA Fair, with a late bus available for eligible students.	Social & hobbies The after-school programme provides a balanced, holistic approach to personal development. It includes Creative Arts, Music, STEM & Innovation, Leadership and Personal Development, and SDIS SPORTS, encouraging teamwork and a sense of belonging. Co-curricular activities are taught by school teachers and outside coaches and are free of charge; extra-curricular activities may incur fees. Participation helps students build communication, collaboration and diverse friendships.
Community & service	Community & service The Student Council emphasizes service and charity, organizing food bank collections, fundraising and community events. The council engages in school-wide social events and campaigns, and funds improvements for the school community as needed.	Community & service Creativity Action Service (CAS) is central to the Diploma Programme and involves students in creativity, action and service across local, national and international contexts. Examples include Habitat for Humanity in Braga, teaching at local schools and orphanages, organizing Street Stores for the homeless, helping the national food bank, reading for the elderly and joining international CAS trips, along with sporting events and musical and drama productions.
Leadership & professional	Leadership & professional The Duke of Edinburgh Award offers Bronze, Silver and Gold levels focusing on volunteering, physical and skills, with expeditions. Leadership is also developed through the Student Council, sports captains, House Captains and Head Students, with annual elections to select student leaders.	Leadership & professional The Parent Teacher Association (PTA) brings together parents and staff to support student welfare and school projects and organises events such as the Welcome Barbecue, Christmas Fair and International Day. PTA activities foster open communication and community involvement. The IB MYP framework also emphasises Service as Action and collaborative projects, promoting leadership and international-mindedness.
Lifestyle & wellbeing	Lifestyle & wellbeing Sports are a core part of OIS, with competitive and non-competitive activities and participation in CHESS and ISSA leagues; offered sports include football, volleyball, basketball, and cross-country. Physical and Health Education is integrated into the MYP curriculum, and the Diploma Programme offers Sports, Exercise and Health Sciences as an option. The Quinta grounds provide space for recreational activities, trekking tracks, skating, and inter-school tournaments.	Lifestyle & wellbeing The sports program is inclusive and fosters wellbeing, providing opportunities to learn sports, develop teamwork and belonging. The after-school program reinforces wellbeing through physical activity, social interaction and a health-focused approach to both body and mind. Participation in sports and clubs promotes healthy habits, resilience and lifelong wellbeing.
Language provision	Language provision
Language provision	Language provision Portuguese and English are core languages; they are taught as first language or Language and Literature in IB terms. German, French, Spanish and Mandarin Chinese are offered as first language and for language acquisition. Most students study three languages, with the level of study matched to fluency rather than age. In the MYP, language acquisition is taught for 3 lessons per week.	Language provision The language programs consist of EAL, Language Acquisition, and Language and Literature. English is the language of instruction in the Junior School (Nursery to Grade 5); Portuguese language is taught from Grade 1 to Grade 5. From Grade 1 to Grade 8, the school teaches Portuguese Language and Culture as host country language. Languages and Literature courses include English, Portuguese, Mandarin, Spanish and French.
Bilingual teaching	Bilingual teaching Portuguese and English are core languages; in IB terms they are Language and Literature or first language. German, French, Spanish and Mandarin Chinese are offered as first language and for language acquisition. Most students study three languages.	Bilingual teaching The school teaches in English across the curriculum. English is the language of instruction in the Junior School (Nursery to Grade 5); Portuguese is taught from Grade 1 to Grade 5. All Junior School students have Portuguese and English. The school supports multilingualism and translanguaging.
Immersion programs	Immersion programs —	Immersion programs —
Reputation	Reputation
Awards	Awards —	Awards —
Accreditations	Accreditations —	Accreditations IBO, CIC, ECIS, NEASC
Admissions	Admissions
Admissions	Admissions Students aged 5 to 18 may be admitted, with OIS beginning in Year 2 (PYP1) for typically 6-year-olds. The school is over-subscribed in most year groups, so applying early is advised. A placement test assesses cognitive ability and learning style; there is no pass or fail mark, and staff determine whether they can support the student, with the Student Support Department assisting if extra help is needed. Priorities for admission are: first current students, staff and founding/associate members; second siblings of current students; other applicants are considered as space allows; under equal conditions, offers go to the student with the best previous academic record. There is a learning support program, but applications with severe emotional needs cannot be catered for. Documentation and an interview are required. OIS accepts applications throughout the year (Rolling Admissions) if space becomes available. English language requirements vary by grade; a minimum level is advised, fluency is not compulsory for admission to certain year groups, and full proficiency is required for Years 10–13 and will be assessed during admissions. The admissions steps are: register your interest; complete the application form and pay the €250 application fee; schedule placement tests; attend an interview with the programme coordinator; Admissions Committee reviews the application; upon successful completion, upload the required documentation and pay the registration fee to secure the place; if there is no space, the applicant will be placed on the waiting list.	Admissions The school has an open admission policy and accepts students with a broad range of academic ability and learning needs. All applications are reviewed prior to confirming availability to ensure the resources to support the student, with focus on student wellbeing within the International Baccalaureate Programmes. Expression of Interest: submit the requested information to be contacted by a member of the admissions team. Visit to the Campus and Meeting with Admissions Team: during the school tour you meet a member of the teaching staff and, where possible, a student of a similar age; if applying to Grade 6 or above, a placement test may be requested during your visit or at your child's current school. Students not fluent in English or with special educational needs may be referred to Learning Support professionals. Offer Email: after the visit the application is reviewed to confirm availability; placement is offered according to space and the date of your application. Registration Forms, Documents and Fees: to complete registration and secure a place, you will receive and complete forms including Registration details, Health Questionnaire, School Consents, Rules and Regulations, Tuition Fees; it is important to disclose any health or learning concerns to avoid difficulties, and a Registration fee payment is required. Registration Confirmation: on receipt of the completed forms and payment of the Annual Registration and the applicable Capital Levy, the School will confirm admission.
Scholarships	Scholarships The school offers scholarships for outstanding students. Scholarships may be awarded to students who live or study within the Oeiras area who otherwise may not have the opportunity to benefit from an OIS education. Scholarships are awarded on merit by the Scholarship Selection Council and are weighted by need, with partial or full scholarships possible. They cover all yearly registration and fees and required educational activities, with no other discounts applied. Open to students ranked in the top 10% of their year (Year 7 through Year 12) who live or study in the municipality of Oeiras. Ten full scholarships exist, and automatic yearly renewal is based on continued high academic achievement and significant involvement in wider school activities. The online application must be submitted by 14 March at 17:00 and includes: a letter from the applicant's parents in English or Portuguese, a short video in English outlining why they wish to join OIS, the applicant's Curriculum Vitae, reports from the previous three years including grades, three recommendation letters (one from Head Teacher/Principal and two from current teachers), and a declaration from the Head Teacher/Principal that the applicant is ranked in the top 10%. The Scholarship Selection Council is composed of one representative from Câmara Municipal de Oeiras (CMO) and at least three OIS representatives. Submissions deadline for Academic Year 2026/27 is Closed.	Scholarships —
Waitlist	Waitlist If there is no available place, the applicant will be placed on the waiting list.	Waitlist —
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