The British International School Istanbul
International School in Istanbul
Quick answer
The British International School Istanbul (BISI) serves 600 students from 55 nationalities aged 3 to 18. The school combines British curriculum with the IB Diploma at sixth form, accredited by IBO, CIS, COBIS, MSA-CESS and CIE — a five-accreditation set rare in Türkiye. Tuition $26,906-$61,099 per year — premium positioning. Strong fit for diplomatic and corporate expat families on Istanbul assignments seeking established British/IB-track education with broad recognition signals.
Key facts
- Curriculum: IB, British leaving qualifications include IGCSE and IB Diploma.
- Tuition: $26,906–$61,099/yr published annual range.
- Avg class size: 12 (max 15) Istanbul international school · 600 students total.
- 55 nationalities top: British.
- Ages: Ages 3 to 18 school day starts at September.
- Accreditations: IBO, CIS, COBIS plus 2 more.
600
55 (British)
12 avg / 15 max
Rolling
IBO, CIS, COBIS, MSA-CESS, CIE
IGCSE and IB Diploma
About The British International School Istanbul
The British International School Istanbul has a worldwide reputation for the education it provides. It is a leading private international School in Turkey, offering a modified English National Curriculum, IGCSE and the International Baccalaureate Diploma Programme. The BIS is an academic school and it sends its graduates to universities throughout the world, predominantly to the UK and USA.
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
- Educational psychologist available
- EAL/ESL support listed
Questions to ask the school
- 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- Is learning support guaranteed for the full enrolment, or can it be withdrawn later?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) | $26,906 – $61,099 |
| Annual tuition (local) | 860989TL-1955162TL |
| Fee year | 2025-2026 |
| Est. all-in cost (modeled)how we calculate | $45,953(+4%) |
| Est. first-year total (modeled) | $47,453 |
| Cost position in Istanbul | 82th percentile(premium tier) |
IB, British
IGCSE and IB Diploma
IGCSE, IB Diploma
Average IB score is about 38 over 45
German, Spanish, French, Turkish
The Learning Support Department staff work collaboratively with mainstream teachers, parents, administrators, as well as with the ESL department, external Educational Psychologists, Speech Therapists and other professionals.
The BISI Learning Support Department provides support for students experiencing Special Needs in accordance with the school’s philosophy and goals. The department is responsible for the provision of intervention and progress review of students referred for Learning Support.
English as a Second Language
September – At the end of June
Yes
Yes
Imported from a directory listing and not independently verified — confirm fees and details with the school.
Is The British International School Istanbul right for your family?
A School Fit Brief scores this school against your children's ages, learning needs, and budget — with hidden fee analysis, admissions timing, and a ranked shortlist of alternatives in Istanbul.
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At a Glance
Fee Position in Istanbul
Mid-rangeSchool Profile
Class Size
Student Diversity
Very diverse
Common: British
Estimated Real Cost
Tuition + registration, transport, uniform, exams
Decide on this school — and four others
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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.