International School of London
International School in London
Quick answer
International School of London (ISL) serves 440 students from 61 nationalities aged 3 to 18 in London. The school is an IB Continuum World School (PYP, MYP, DP), accredited by IBO and CIS. Tuition $23,990-$38,420 per year. The 61-nationality diversity is exceptional. Strong fit for diplomatic and corporate expat families on London assignments seeking established IB pathways with strong international diversity, distinct from London's larger British-curriculum private schools.
Key facts
- Curriculum: IB taught at International School of London.
- Tuition: $23,990–$38,420/yr published in GBP, US$ equivalent.
- Avg class size: 15 (max 22) London international school · 440 students total.
- 61 nationalities top: Our student population is very mixed and changes from year to year. Currently we have large groups from Japan, America, Italy and UK.
- Ages: Ages 3 to 18 school day starts at 8.30.
- Accreditations: IBO, CIS verified.
440
61 (Our student population is very mixed and changes from year to year. Currently we have large groups from Japan, America, Italy and UK, but there is not one nationality that is dominant)
15 avg / 22 max
Rolling
1972
IBO, CIS
About International School of London
ISL provides an intercultural community that fosters a passion and enthusiasm for learning through outstanding educational practices, recognised by OFSTED, the IB and CIS. At ISL, everything we design encourages students, teachers and parents to use the diverse cultures, languages and viewpoints around them to change the world for the better. Students' cultural and linguistic identities are valued and nurtured through our international curriculum and Home Language programme. Since 1972, we’ve established a community where students, parents and staff are happy and engaged in school life. That’s why our people are curious, able to explore deeper and broader, and build a unique understanding of the world around them. They develop deeper thinking and share rich experiences that send them out into the world with the talent, determination and compassion to change it for the better.
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) | $23,990 – $38,420 |
| Annual tuition (GBP) | 23990-38420 |
| Fee year | 2025-2026 |
| Est. all-in cost (modeled)how we calculate | $34,715(+11%) |
| Est. first-year total (modeled) | $37,215 |
| Cost position in London | 87th percentile(premium tier) |
IB
IB Diploma
In 2024 ISL's students scored an average of 33 out of possible 45 points. ISL's 2024 highest score was 41 points. Bilingual diplomas were awarded to 63% of our students in 2024.
Although there are more languages spoken in school, ISL offers lessons at mother tongue level in 23 different languages - the full list is below. Language acquisition classes are offered in Spanish, French and Mandarin. Home language list: Arabic, Chinese, Croatian, Danish, Dutch, English, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Icelandic, Italian, Japanese, Korean, Polish, Portuguese, Russian, Spanish, Turkish, Ukranian
We employ specialists in neurodiversity to support the needs of our students.
Yes.
We have an extensive Home Language programme that is integrated into the curriculum. We teach 23 languages at the moment and will find a native speaking language teacher for new students if there is not already one in the school. We also have a programme of English Language Learning for those students who are not so fluent in English (our language of instruction) that runs alongside the curriculum. Parents are invited to English language classes of their own.
8.30 – 3.30
Yes, or they can bring their own lunch.
All food prepared in the school kitchen is halal.
Imported from a directory listing and not independently verified — confirm fees and details with the school.
Is International School of London right for your family?
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At a Glance
Fee Position in London
Mid-rangeSchool Profile
Class Size
Student Diversity
Very diverse
Common: Our student population is very mixed and changes from year to year. Currently we have large groups from Japan, America, Italy and UK, but there is not one nationality that is dominant
Estimated Real Cost
Tuition + registration, transport, uniform, exams
Decide on this school — and four others
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Nearby Schools (within 5km)
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.