Oeiras International School
International School in Lisbon
Quick answer
Key facts
- Curriculum: IB taught at Oeiras International School.
- Tuition: $15,701–$25,165/yr published in EUR, US$ equivalent.
- Avg class size: 16 (max 16) Lisbon international school · 460 students total.
- 50 nationalities top: American/British.
- Ages: Ages 5 to 18 school day starts at 8:15.
- Accreditations: IBO, CIS, NEASC plus 1 more.
460
50 (American/British)
16 avg / 16 max
Available
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- Is learning support guaranteed for the full enrolment, or can it be withdrawn later?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) | $15,701–$25,165 |
| Annual tuition (EUR) | 13547-21713 |
| Fee year | 2025-2026 |
| Est. all-in cost (modeled)how we calculate | $22,083(+8%) |
| Est. first-year total (modeled) | $23,583 |
| Cost position in Lisbon | 87th percentile(premium tier) |
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
Imported from a directory listing and not independently verified — confirm fees and details with the school.
At a Glance
Fee Position in Lisbon
Mid-rangeSchool Profile
Class Size
Student Diversity
Very diverse
Common: American/British
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