Oeiras International School
International School in Lisbon
Quick answer
Key facts
- Curriculum: IB taught at Oeiras International School.
- Tuition: $14,000–$24,000/yr published in EUR, US$ equivalent.
- Avg class size: 16 (max 16) Lisbon international school · 460 students total.
- 50 nationalities top: American/British.
- Ages: 3-18 school day starts at 8:15.
- Accreditations: IBO, CIS, NEASC plus 1 more.
460
50 (American/British)
16 avg / 16 max
Rolling
IBO, CIS, NEASC, ECIS
About Oeiras International School
Oeiras International School is committed to promoting a respectful community of independent and passionate lifelong learners who are aware of their roles and responsibilities in an ever-changing world. To this end, OIS offers a variety of learning experiences within a supportive and challenging environment of rigorous academic programmes.
Learning & language support (SEN / EAL)
This school states meaningful learning-support provision — still confirm it fits your child's specific need.
Why this matters
Special-needs provision at international schools varies widely and is rarely guaranteed by the school itself — and local legal duties differ by country. Confirm what this school provides, in writing, before you commit.
- Learning support: moderate
- In-house specialist staff listed
- EAL/ESL support listed
Not published
- —Educational-psychologist availability not stated
Questions to ask the school
- Is an educational psychologist on staff or available by referral?
- Can you support a child with my child's specific need (e.g. dyslexia, ADHD, autism), and have you done so this year? Ask for concrete examples.
- Is there an additional fee for learning support or EAL — and how much per year?
- Is learning support guaranteed for the full enrolment, or can it be withdrawn later?
| Item | Amount |
|---|---|
| Annual tuition (USD) | $14,000–$24,000 |
| Annual tuition (EUR) | 13547-21713 |
| Fee year | 2025-2026 |
| Est. all-in cost (modeled)how we calculate | $20,650(+9%) |
| Est. first-year total (modeled) | $22,150 |
| Cost position in Lisbon | 74th percentile(above average) |
Hidden costs & fee notes
Full IB continuum (PYP, MYP, DP). Historic campus in 17th-century palace grounds. 5% discount for 2nd child, 20% for 3rd.
IB
IB Diploma
98% pass rate
Chinese, French, Portuguese, Spanish, German
Varies depending on individual needs.
Yes
English as an Additional Language
8:15 – 15:45
Yes
Yes
Recommended neighborhoods
Oeiras, Carnaxide, Linda-a-Velha, Alges
At a Glance
Fee Position in Lisbon
Mid-rangeSchool Profile
Class Size
Student Diversity
Very diverse
Common: American/British
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Disclaimer: School profiles are source-backed decision aids, not endorsements or official rankings. Tuition figures are approximate and may not include registration fees, uniforms, transport, or exam costs. Always verify directly with the school before applying. WhereNext is not affiliated with any school listed. This is not admissions consulting, legal advice, or official school placement guidance.