International Sharing School vs Oeiras International School

	I International Sharing School Lisbon, Portugal	O Oeiras International School Lisbon, Portugal
Snapshot	Snapshot
Fees / year	Fees / year €11,790 - 26,760	Fees / year €14,962 - 24,844
Age range	Age range 1 - 18 years	Age range 6 - 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 600	Pupils 463
Typical class size	Typical class size 20	Typical class size 16
Instruction language	Instruction language English	Instruction language English
Opened	Opened 2019	Opened 2010
Bus service	Bus service No	Bus service Yes
Essentials	Essentials
Location	Location Av. Dr. Mário Soares 14, Porto Salvo, 2740-119 Portugal.	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.
Stages	Stages Foundation and Early Years; Primary Years Programme; Middle Years Programme; Diploma Programme.	Stages Primary Years Programme (Age 5-11), Middle Years Programme (Age 11-16), Diploma Programme (Age 16-19).
School type	School type —	School type Oeiras International School is a non-profit Association (OIS, ASFL) founded by parents and is an International Baccalaureate World School.
Pupil nationality mix	Pupil nationality mix Students from 51 nationalities learning together.	Pupil nationality mix Nationalities represented: 48+.
Additional learning support	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.
Country affiliation	Country affiliation Portugal	Country affiliation —
Religious affiliation	Religious affiliation —	Religious affiliation —
School day structure	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.
Bus service details	Bus service details —	Bus service details The School runs its own bus routes from Cascais, Estoril, Sintra, Parede and the Lisbon area.
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 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.
Diving deeper	Diving deeper
Boarding arrangements	Boarding arrangements —	Boarding arrangements —
Uniform requirement	Uniform requirement —	Uniform requirement —
Food options	Food options —	Food options —
House system	House system —	House system —
Governance and ownership	Governance and ownership —	Governance and ownership —
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 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.
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 1:6 teacher to student; average class size 16.
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 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.
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 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.
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 —	Social & emotional learning —
Special educational needs (SEN)	Special educational needs (SEN) —	Special educational needs (SEN) —
English as an additional language	English as an additional language —	English as an additional language —
Mental wellbeing	Mental wellbeing —	Mental wellbeing —
Safeguarding	Safeguarding —	Safeguarding —
Safeguarding policy	Safeguarding policy —	Safeguarding policy —
Facilities	Facilities
Facilities overview	Facilities overview —	Facilities overview —
Sports facilities	Sports facilities —	Sports facilities —
Academic facilities	Academic facilities —	Academic facilities —
Extra curricular facilities	Extra curricular facilities —	Extra curricular facilities —
Parent experience	Parent experience
History	History —	History —
Community	Community —	Community —
Parent teacher association	Parent teacher association —	Parent teacher association —
Extra-curricular	Extra-curricular
Academic & intellectual	Academic & intellectual —	Academic & intellectual —
Arts & creative	Arts & creative —	Arts & creative —
Cultural & language	Cultural & language —	Cultural & language —
Social & hobbies	Social & hobbies —	Social & hobbies —
Community & service	Community & service —	Community & service —
Leadership & professional	Leadership & professional —	Leadership & professional —
Lifestyle & wellbeing	Lifestyle & wellbeing —	Lifestyle & wellbeing —
Language provision	Language provision
Language provision	Language provision —	Language provision —
Bilingual teaching	Bilingual teaching —	Bilingual teaching —
Immersion programs	Immersion programs —	Immersion programs —
Reputation	Reputation
Awards	Awards —	Awards —
Accreditations	Accreditations —	Accreditations —
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.	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.
Scholarships	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.
Waitlist	Waitlist —	Waitlist If there is no available place, the applicant will be placed on the waiting list.
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