International Sharing School Lisbon vs Oeiras International School

	I International Sharing School Lisbon 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 —	Pupils 463
Typical class size	Typical class size 20	Typical class size 16
Instruction language	Instruction language English	Instruction language English
Opened	Opened 1980	Opened 2010
Bus service	Bus service Yes	Bus service Yes
Essentials	Essentials
Location	Location Av. Dr. Mário Soares 14, 2740-119 Porto Salvo, Portugal. It is in the Lisbon metropolitan area. The school offers home-to-school transport to Lisbon, Oeiras, Cascais and Sintra. sharingschool.org	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 Foundations (1–3 years); Primary Years Programme (3–11); Middle Years Programme (11–16); Diploma Programme (16–18). sharingschool.org	Stages Primary Years Programme (Age 5-11), Middle Years Programme (Age 11-16), Diploma Programme (Age 16-19).
School type	School type International school (IB World School) offering the IB continuum and a Foundations programme. sharingschool.org	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 Over 50 nationalities represented; multilingual and multicultural student body. sharingschool.org	Pupil nationality mix Nationalities represented: 48+.
Additional learning support	Additional learning support English Boosting Programme to help students improve their English. sharingschool.org	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 Home–school–home transportation from Lisbon, Oeiras, Cascais and Sintra; transportation not included in tuition and subject to availability. sharingschool.org	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 & Admission Fees - Application Fee: €200 (deductible from the Enrolment Fee). - Enrolment Fee (new students): €1,200, payable once the student is accepted. - Renewal Fee (existing students): €600, invoiced annually in February. Tuition Fees by Year Group (per term / per year) - Early Years (Foundations 1 & 2): €3,930 per term / €11,790 per year. - Early Years (ages 3–5): €4,240 per term / €12,720 per year. - Primary Years (PYP): - Grade 1: €5,210 per term / €15,630 per year. - Grade 2: €5,570 per term / €16,710 per year. - Grade 3: €5,690 per term / €17,070 per year. - Grade 4: €6,170 per term / €18,510 per year. - Grade 5: €6,170 per term / €18,510 per year. - Middle Years (MYP): - Grade 6: €6,470 per term / €19,410 per year. - Grade 7: €6,910 per term / €20,730 per year. - Grade 8: €7,005 per term / €21,015 per year. - Grade 9: €7,680 per term / €23,040 per year. - Grade 10: €7,770 per term / €23,310 per year. - Diploma Programme (DP): - Grade 11: €8,560 per term / €25,680 per year. - Grade 12: €8,920 per term / €26,760 per year. Billing schedule & Payment Terms - Invoice cadence and key invoice due dates for continuing students: - Term 1 invoiced 1 June 2026; due by 1 July 2026. - Term 2 invoiced 2 November 2026; due by 2 December 2026. - Term 3 invoiced 1 March 2027; due by 1 April 2027. - Renewal Fee invoiced 1 February 2027; due by 26 February 2027. - Examination fees invoiced 1 June 2026; due by 1 July 2026. - Payment schedule for new students: the Application Fee is paid on application; the Enrolment Fee is paid on acceptance; 50% of the first term's tuition that the student will join must be paid with the Enrolment Fee to secure the place. Remaining tuition follows the ongoing student schedule. - Payment methods accepted: bank transfer (parents must include student name/number on transfer), debit/credit card payments accepted in person at the school office (Visa and Mastercard), and educational vouchers (Edenred, Coverflex, Ticket). Cash payments are not accepted. - Bank details for bank transfers (fees to be received net of bank charges): - Bank: Millennium BCP. Beneficiary: ISS-OEIRAS. IBAN: PT50 0033 0000 4530 8575 3560 5. BIC/SWIFT: BCOMPTPL. - Late payment and debt policy: a 5% monthly compounded fine is charged on overdue payments; legal recovery fees may be charged to the debtor. Students with outstanding debts may have limited access to optional services, reports, exam results and renewal may be withheld. No debt may be carried into the next academic year. - Discounts: sibling discounts are applied as follows — 10% for two siblings, 15% for three siblings, 20% for four or more siblings; 5% school-bus sibling discount on the second and subsequent siblings. A 3% discount is available on annual tuition if the full-year payment is received by 1 July 2026. Discounts are void if fees are not paid according to the payment schedule. Boarding - The school operates as a day school (no boarding provision). Optional services and other recurring fees - School Bus: €1,200 per student per term; School Bus Tracking App fee €45 per student (annual). Use of bus service requires a one-term commitment and withdrawals before the end of the term do not entitle a refund. - After-School Activities: charged per term and subject to a one-term commitment; withdrawals before the end of the term do not entitle a refund. Example after-school (Diploma) fee listed: €203 for specific items; optional activities vary in price. - Inclusion / one-to-one support: charged per session when required; the fee is determined based on the individual support required and confirmed by the Inclusion Team. - Late pick-up fees: €100 per term per student for staying on campus after 17:30 until 18:00; or €10 per day as a one-time late pick-up fee if not enrolled in the termly late-pick-up option. Other mandatory and incidental fees - Uniform Welcome Pack (mandatory): Early Years €185; Primary & Middle Years €270; Diploma €20. Individual uniform unit prices: polo shirt €25; t-shirt €15; hoodie €40; jacket €50; hat €18; house t-shirt €20; PHE equipment package €95. Replacement uniform provided and charged if a student arrives without correct uniform. - Annual insurance: €28. - Yearbook: €32 (issued with Term 1 fees). - School meals: €700 per term (issued with Term 1 fees). - Examination Fees: MYP 5 cohort example €900; DP 2 cohort example €950 (invoiced as listed). - Student card replacement: €10 if lost. Refunds, withdrawal and notice requirements - Notice of withdrawal: parents/guardians must notify the school in writing (email to admissions) one full term before the student's intended departure. Specific notice deadlines for leaving at the ends of terms are listed in the school terms and conditions. - Refund policy: the Application Fee, Enrolment Fee and any payments made to the school are non-refundable under any circumstance. If a student does not attend at the beginning of the school year, the Enrolment Fee and Term 1 fees are not refundable. Temporary suspensions or permanent expulsions do not entitle any refund. Summary of immediate extra charges commonly invoiced with Term 1 - School Meals (per term), Annual Insurance, and Yearbook are invoiced with Term 1 fees. Uniform welcome packs, bus registration and any optional services selected will be invoiced according to their respective schedules and commitments.	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 The school teaches the International Baccalaureate (IB) Programme across four stages: Foundations Programme (1–3 years old); Primary Years Programme (3–11 years old); Middle Years Programme (11–16 years old); Diploma Programme (16–18 years old).	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 —	Student teacher ratio 1:6 teacher to student; average class size 16.
Exam results	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.
Higher education progression	Higher education progression The Diploma Programme prepares students for higher education with a certificate that is recognised worldwide.	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 Send an Enquiry. Our Admissions Team will be glad to send all information you need. Just fill out the form in OpenApply. Year-round enrolment up to Grade 10 is available. Book a School Tour. Take 60 minutes to get to know us and what our community stands for, either in person or online. Submit Final Application. Submit the application form, the most recent report card and complete the payment of the application fee. Assessments & Interviews. After confirming the student's eligibility, an English assessment and interview will be conducted. Confirmation of Enrolment. Enrolments are only confirmed once the school confirms it has received payment for all invoiced fees.	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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