International Sharing School vs Redbridge International School Tapada da Ajuda Campus
International Sharing School and Redbridge International School Tapada da Ajuda Campus are both in Lisbon, about 10 km apart. Both schools offer IB programmes, and Redbridge International School Tapada da Ajuda Campus also offers French, Cambridge IGCSE, Cambridge (Secondary) and Japanese. Published annual fees are €11,790 - 26,760 at International Sharing School and €13,390 - 18,000 at Redbridge International School Tapada da Ajuda Campus, which puts International Sharing School roughly 23% higher. International Sharing School takes pupils from 1 to 18, and Redbridge International School Tapada da Ajuda Campus from 12 to 18. The two are similar in size, at around 600 and 550 pupils. Typical class sizes are 20 at International Sharing School and 16 at Redbridge International School Tapada da Ajuda Campus.
French Curriculum, Cambridge IGCSE, Cambridge (Secondary), IB (DP), Japanese Curriculum
Pupils
Pupils
600
Pupils
550
Typical class size
Typical class size
20
Typical class size
16
Instruction language
Instruction language
English
Instruction language
French, English, Portuguese
Opened
Opened
2019
Opened
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Bus service
Bus service
No
Bus service
No
Essentials
Essentials
Location
Location
Av. Dr. Mário Soares 14, Porto Salvo, 2740-119 Portugal.
Location
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Stages
Stages
Foundation and Early Years; Primary Years Programme; Middle Years Programme; Diploma Programme.
Stages
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School type
School type
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School type
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Pupil nationality mix
Pupil nationality mix
Students from 51 nationalities learning together.
Pupil nationality mix
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Additional learning support
Additional learning support
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Additional learning support
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Country affiliation
Country affiliation
Portugal
Country affiliation
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Religious affiliation
Religious affiliation
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Religious affiliation
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School day structure
School day structure
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School day structure
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Bus service details
Bus service details
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Bus service details
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Fees
Fees
Fee details
Fee details
Application and enrolment fees - Application fee: EUR 200 (deductible from the Enrolment Fee). - Enrolment fee (one‑off, payable when a new student is accepted): EUR 1,200. - Renewal fee (payable annually for returning students; invoiced in February): EUR 600.
Tuition fees by year group (2026/2027) — term and annual amounts - Foundations (Foundation 1 & 2): EUR 3,930 per term — EUR 11,790 per year. - Early Years (ages 3–5): EUR 4,240 per term — EUR 12,720 per year. - Grade 1: EUR 5,210 per term — EUR 15,630 per year. - Grade 2: EUR 5,570 per term — EUR 16,710 per year. - Grade 3: EUR 5,690 per term — EUR 17,070 per year. - Grade 4: EUR 6,170 per term — EUR 18,510 per year. - Grade 5: EUR 6,170 per term — EUR 18,510 per year. - Grade 6: EUR 6,470 per term — EUR 19,410 per year. - Grade 7: EUR 6,910 per term — EUR 20,730 per year. - Grade 8: EUR 7,005 per term — EUR 21,015 per year. - Grade 9: EUR 7,680 per term — EUR 23,040 per year. - Grade 10: EUR 7,770 per term — EUR 23,310 per year. - Grade 11 (DP1): EUR 8,560 per term — EUR 25,680 per year. - Grade 12 (DP2): EUR 8,920 per term — EUR 26,760 per year.
Billing schedule and payment terms (2026/2027) - Invoicing and due dates for ongoing students: Term 1 invoiced 1 June 2026, due 1 July 2026; Term 2 invoiced 2 November 2026, due 2 December 2026; Term 3 invoiced 1 March 2027, due 1 April 2027. Renewal fee invoiced 1 February 2027, due 26 February 2027. Examination fees invoiced 1 June 2026, due 1 July 2026. - New‑student payment schedule: application fee paid on submission; enrolment fee paid when the student is accepted; 50% of the tuition for the first term the student will join is payable with the Enrolment Fee to secure the place; remaining fees then follow the standard schedule. - Invoicing frequency: families may be invoiced either termly or annually according to preference. Annual invoices may attract a payment discount (see Discounts). All invoices must be paid net of bank charges. Cash payments are not accepted. - Late payments: 5% monthly compounded fine on overdue payments; legal fees for recovery of debt may be charged to the debtor. Students with outstanding debts may have limited access to optional services and their renewal for the following year may not be processed. No debt may be carried into the next academic year.
Boarding - Not applicable: there are no boarding fees listed for the Taguspark/Lisbon campus. The school operates as a day school; boarding provision is not in effect for the Lisbon campus.
Other mandatory and regular additional costs - School meals (optional service): EUR 700 per term; school meals are not included in the tuition and are invoiced with Term 1 fees. The meal plan includes a three‑course lunch and two snacks per day. - School bus (optional service): EUR 1,200 per student per term. School bus tracking app: EUR 45 per student (annual fee). The school bus service is subject to a one‑term commitment; withdrawals before the end of a term do not entitle a refund. - Yearbook: EUR 32 (issued with Term 1 fees). Annual insurance: EUR 28 (issued with Term 1 fees). Examination fees and other specified items are invoiced as noted in the payment schedule. - After‑school activities and clubs: some clubs are included in tuition; others are optional and charged separately. Optional activities are subject to a one‑term commitment and are non‑refundable if withdrawn before term end. An example listed for Diploma extracurricular charge: EUR 203 (indicative). One‑to‑one Inclusion Team support is charged when required and determined case‑by‑case. - Student card replacement fee (MYP/DP): EUR 10 if lost. Late pick‑up fees: EUR 100 per term per student (or a one‑time EUR 10 per day if not enrolled in the termly late‑pick up option).
Uniform costs - Welcome pack (required for new students; prices by division): Early Years / PYP welcome pack: EUR 185; MYP / DP welcome pack: EUR 270. Physical & Health Education equipment pack: EUR 95. Individual uniform item prices: polo shirt EUR 25; T‑shirt EUR 15; hoodie EUR 40; jacket EUR 50; hat EUR 18; house T‑shirt EUR 20; PHE items (T‑shirt EUR 15, shorts EUR 15, trousers EUR 25, hoodie EUR 40). If a student arrives without correct uniform, a replacement will be provided and invoiced at the listed price.
Refund and withdrawal rules - Notice of withdrawal: parents/guardians must notify the school in writing by email one full term before the student's intended departure. Specific notice deadlines to leave at the end of each term for 2026/27 are: to leave at the end of Term 1 — notice before 30 September 2026; end of Term 2 — before 4 January 2027; end of Term 3 — before 12 April 2027. Failure to provide required notice will result in charges for the subsequent term. - Non‑refundable items: the Enrolment Fee, the Application Fee and any payments made to the school are stated as non‑refundable under any circumstance. Optional service fees (bus, after‑school activities) are subject to the one‑term commitment and withdrawals before end of term do not entitle a refund. Temporary suspensions or permanent expulsions do not entitle any refund.
Payment options and bank details - Accepted payment methods: bank transfer (specify student name/number on transfer), debit/credit card payments accepted in person at the school office (Visa and Mastercard), and approved educational vouchers (Edenred, Coverflex, Ticket). Cash payments are not accepted in line with Portuguese legislation. - Bank details for transfers (as provided for payments): Bank Name: Millennium BCP; Beneficiary: ISS‑OEIRAS; IBAN: PT50 0033 0000 4530 8575 3560 5; BIC/SWIFT: BCOMPTPL. All fees must be received net of bank charges.
Discounts and concessions - Sibling discount on tuition: 10% for two siblings; 15% for three siblings; 20% for four or more siblings. A 5% discount applies to the second and subsequent siblings on the school bus fee. Discounts are void if fees are not paid according to the published payment schedule. - Annual payment discount: 3% discount on annual tuition fees if paid in full by 1 July 2026 (annual invoice must be fully settled by that date to retain the discount).
(Information above reflects the published tuition and terms for the 2026/2027 academic year.)
Fee details
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Diving deeper
Diving deeper
Boarding arrangements
Boarding arrangements
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Boarding arrangements
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Uniform requirement
Uniform requirement
ISS Lisbon has a school uniform. Uniforms can be purchased directly from the school. The uniform items include: EY T-shirt (soft white, EY-specific); Polo Shirt (white); Hoodie (grey); Winter Jacket (electric blue); Hat (black); Bucket Hat (dark blue); Sports T-Shirt; Sports Hoodie; Track Pants (dark blue); Track Shorts (dark blue).
Uniform requirement
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Food options
Food options
School meals are provided on-site by Thomas Franks; lunch is served, with healthy snacks mid-morning and mid-afternoon. The menu includes fish, meat and vegetarian options. The kitchen is nut-free and accommodates dietary requirements; meals are designed to promote focus, energy and wellbeing.
Food options
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House system
House system
Each student belongs to one of four houses: Red Sharks, Green Sharks, Yellow Sharks and Purple Sharks. Houses compete in academics, sports and creative events; prefects lead events and help integrate new students.
House system
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Governance and ownership
Governance and ownership
ISS Lisbon is governed by a Board of Governors that works with the Principal and Senior Leadership Team to guide long-term strategic goals. Governors focus on strategy, oversight, safety, wellbeing, and school improvement, reflecting the governance approach used across the Dukes Education family.
Governance and ownership
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Academics
Academics
Curriculum details
Curriculum details
IB Continuum taught in English from Nursery to Grade 12, including Early Years Programme, Primary Years Programme, Middle Years Programme, Diploma Programme and IB University Prep. The curriculum is inquiry-based and cross-disciplinary with specialist teachers in arts, languages, STEAM and outdoor learning.
Curriculum details
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Student teacher ratio
Student teacher ratio
Maximum class size is 20 students; EY and PYP classes have two teachers per class in addition to subject specialists.
Student teacher ratio
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Exam results
Exam results
IB Diploma Programme results: average score of the top 40% students in 2025 was 36; the highest DP score achieved by ISS was 45/45; DP average score in 2025 was 32. University destinations include admission to over 40 top universities worldwide. University and careers counselling are provided, with weekly sessions during the DP and a Future Pathways Programme to guide transitions from MYP to DP and beyond; Dukes Plus offers additional university and careers support.
Exam results
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Higher education progression
Higher education progression
Graduates pursue higher education at over 40 top-tier universities worldwide. The school provides weekly sessions with the careers counsellor during the Diploma Programme and structured guidance through the Careers and University Counselling Team; the Future Pathways Programme supports transitions from the MYP to the Diploma Programme and beyond; there is collaboration with Dukes Plus for university and careers support.
Higher education progression
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Gifted and talented
Gifted and talented
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Gifted and talented
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Academic calendar
Academic calendar
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Academic calendar
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Wellbeing & support
Wellbeing & support
Social & emotional learning
Social & emotional learning
The school provides a holistic education that develops the whole child socially, emotionally, and physically. The Primary Years Programme teaches in English and prioritizes language acquisition and development as part of its holistic approach. The Middle Years Programme supports personal, social, and emotional wellbeing alongside academic progress. The MYP features the Sharing Star Programme, a signature element that reinforces learning through sharing and social development. Wellbeing is placed at the heart of learning across ISS Lisbon.
Social & emotional learning
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Special educational needs (SEN)
Special educational needs (SEN)
Learning Diversity and Inclusion Policy guides the school's approach to supporting diverse learners. Differentiated teaching ensures every student receives the support and guidance needed to thrive academically and personally. The Inclusion and Psychologists team provides wellbeing and academic support to students. ISS Lisbon fosters an inclusive environment where students with a range of needs can participate and progress.
Special educational needs (SEN)
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English as an additional language
English as an additional language
The school teaches in English and emphasizes language acquisition and development. An English Language Acquisition Teacher and a Pastoral Team support EAL learners. Admissions include an English language assessment as part of the process. Language development is embedded across the curriculum in the IB programmes.
English as an additional language
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Mental wellbeing
Mental wellbeing
Wellbeing is placed at the heart of learning at ISS Lisbon. The Middle Years Programme explicitly supports personal, social and emotional wellbeing alongside academics. The PYP emphasises nurturing the whole child, including social and emotional learning. The Inclusion and Psychologists team provides ongoing wellbeing and personal growth support for students.
Mental wellbeing
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Safeguarding
Safeguarding
ISS Lisbon is committed to safeguarding and promoting the welfare of children and young people. Staff are expected to be proactive about health and safety and to maintain a safe classroom environment. School trips are conducted with safeguarding standards to protect students. Safeguarding is embedded in the school's policies and everyday practice.
Safeguarding
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Safeguarding policy
Safeguarding policy
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Safeguarding policy
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Facilities
Facilities
Facilities overview
Facilities overview
ISS Lisbon is housed on a two-building campus with separate primary and secondary facilities to foster community while keeping year groups together. The learning spaces are designed to support inquiry‑based learning and collaborative work, including Mountain Top for lectures, Cave for independent study, Campfire for group work, Watering Hole for social learning, Hands‑On for practical exploration and Movement for active learning. The campus is located in the Oeiras region of the Lisbon metropolitan area, surrounded by nature and near a cultural centre. This location also allows for experiences and excursions across the region, with Lisbon and Cascais about a 20‑minute drive away.
Facilities overview
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Sports facilities
Sports facilities
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Sports facilities
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Academic facilities
Academic facilities
The campus includes a set of dedicated learning spaces designed for varied modes of learning, including Mountain Top, Cave, Campfire, Watering Hole, Hands‑On and Movement. Mountain Top is used for lectures and briefings, Cave for independent work, Campfire for collaborative dialogue, Watering Hole for social learning, Hands‑On for practical exploration and Movement for physical activity. The two-building arrangement groups primary and secondary cohorts in close proximity to support project‑based inquiry and smooth transitions between ages. ISS Lisbon offers the International Baccalaureate in English from Nursery to Grade 12, integrating these spaces into an IB curriculum across all years.
Academic facilities
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Extra curricular facilities
Extra curricular facilities
The After School Activities Programme is inclusive and provides experiences across arts, music, science and sports. Activities are not included in tuition and fees are charged per term. A wide range of activities is offered, including 3D Modeling & Programming, Art, Basketball, Climbing, Football, Rugby, Sailing, Surf, Swimming, Padel, Judo, Robotics, Photography and more. Times and availability vary by activity and term.
Extra curricular facilities
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Parent experience
Parent experience
History
History
ISS Lisbon is part of the Dukes Education family of nurseries, schools, and colleges across the UK and Europe. Dukes Education was founded in 2015 by Aatif Hassan. Being part of the Dukes Education family gives ISS Lisbon the strength of a close-knit educational community while preserving its own identity, character, and culture. Dukes Education Across Europe shows growth, including in Portugal where ISS Lisbon partners with sister schools within the Dukes Education family to share professional development and collaborative initiatives.
History
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Community
Community
ISS Lisbon hosts a global, multicultural community with students from 51 nationalities and a multilingual staff. The house system connects learners across ages, and student voice is represented through the Student Council, Student Action Group, and dozens of student-led clubs. Parents are partners, with a parent committee, parent-teacher forums, and a 'Champions of the School' group ensuring their input is heard and valued. Regular social events and involvement in activities such as volunteering at the Dukes Festival of the Arts, and connections with other families through the Dukes Foundation, foster a sense of belonging.
Community
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Parent teacher association
Parent teacher association
The parent committee, parent-teacher forums, and 'Champions of the School' group provide channels for parent input and partnership with ISS Lisbon. Regular social events help globally-mobile families feel at home from day one. Parents volunteer at events such as the Dukes Festival of the Arts. Families connect with other families through the Dukes Foundation. ISS Lisbon supports parent involvement through formal and informal parent groups.
Parent teacher association
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Extra-curricular
Extra-curricular
Academic & intellectual
Academic & intellectual
The After School Activities Programme in Lisbon offers a wide range of academically oriented experiences that extend learning beyond class. It includes 3D Modeling & Programming, Game Development with AI, Python with AI, Robotics, and Business MiniGames, alongside Maths Club I/II and Homework Club I/II. These activities develop critical thinking, problem solving and coding skills through inquiry-based formats. Fees are per term and vary by activity.
Academic & intellectual
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Arts & creative
Arts & creative
Artistic and creative programmes are offered after school, including PYP Art, MYP/DP Art, Graffiti, Photography, Music Academy, and Musical Theatre. Dance Ballet and Dance Modern & Jazz develop technique and musicality, while Prop & Design and Script Writing support theatre and storytelling. Musical Theatre combines acting, singing and dancing for vibrant performances. Some activities are included in the clubs programme and others may carry separate fees.
Arts & creative
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Cultural & language
Cultural & language
Russian Literature is offered, and Russian for Native Speakers is available. Portuguese Storytelling supports language development and bilingual experiences. Russian language offerings include beginner and literature-focused activities for interconnected language learning.
Cultural & language
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Social & hobbies
Social & hobbies
Clubs and hobby groups foster social interaction and personal interests, including Fun Lego, Storytelling, Reading Club, Homework Club, Maths Club and various arts and sports activities. Students can pursue passions through Music Academy, Debate Club, Musical Theatre, Photography and other creative outlets. Our clubs are included in tuition fees at ISS Taguspark.
Social & hobbies
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Community & service
Community & service
Student Council provides leadership experience by teaching about UN SDGs and taking action to make the school community more sustainable. Student trips extend learning beyond the classroom, including mountain expeditions, theatre trips and sports fixtures. The School House system promotes belonging and teamwork within the community.
Community & service
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Leadership & professional
Leadership & professional
Leadership is encouraged through the pastoral curriculum, mentoring, and opportunities to take on leadership roles, developing an entrepreneurial mindset. The School House system promotes teamwork and collaboration across year groups. The Student Council and other activities help students learn governance, collaboration and professional communication skills.
Leadership & professional
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Lifestyle & wellbeing
Lifestyle & wellbeing
Wellbeing is central to ISS, nurturing emotional, social and physical wellbeing to support academic success and overall growth. The Wellbeing Team includes a Pastoral Team, Inclusion Team, a Psychologist and Nurses. The pastoral curriculum emphasizes life skills, mentoring, leadership and resilience, and supports safeguarding and online safety as part of a structured wellbeing programme.
Lifestyle & wellbeing
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Language provision
Language provision
Language provision
Language provision
The school uses English as the language of instruction across the IB programmes from Nursery to Diploma. Portuguese is taught as a language; in the Primary Years Programme, language instruction is delivered in English. In the Middle Years Programme, Language & Literature covers English and Portuguese, while Language Acquisition includes English, Spanish, Portuguese, and French. In the Diploma Programme, Language & Literature offerings include English A, English B, Portuguese A, Portuguese B, and Language Acquisition includes Portuguese B, French B, Spanish B, and French ab initio, with Russian A: Literature also offered. Foundations and Early Years include Portuguese taught by a specialist. ISS Lisbon is a multilingual and multicultural setting with students from more than 50 nationalities.
Language provision
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Bilingual teaching
Bilingual teaching
The school teaches in English. Portuguese is taught as a language, and the IB curriculum supports multilingual learning across levels.
Bilingual teaching
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Immersion programs
Immersion programs
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Immersion programs
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Reputation
Reputation
Awards
Awards
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Awards
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Accreditations
Accreditations
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Accreditations
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Admissions
Admissions
Admissions
Admissions
Step 1: Send an enquiry. ISS offers an IB education for children aged 3-18. To begin the admissions journey, fill out the enquiry form. A member of the Admissions Team will respond with information for the next steps. The school is currently accepting enquiries for the Academic Year 2026-27 for all age groups.
Step 2: Book a school tour. Families are encouraged to book a school tour to see ISS in action. Tours can be conducted in person or online. During the visit, a tour of the school is provided and the educational philosophy is explained. This step helps families understand the learning environment before applying.
Step 3: Submit your formal application. Complete the application form and provide a recent report card. Pay the application fee. These materials initiate the formal review of the applicant.
Step 4: Assessment / interview. After reviewing the application, families are invited to an interview. The child will undertake an English language assessment as part of the process. The admissions team will communicate the outcome of the assessment.
Step 5: Confirmation of enrolment. If a place is offered, the family will be informed by the Admissions Team. Enrolment is confirmed only after payment of all required fees. The school will provide next steps and onboarding information after enrolment.
