ACS International Schools vs TASIS The American School in England
🇬🇧 London · Side-by-side comparison on verifiable public data.
Both carry a public inspection verdict: ACS International Schools is Independent Schools Inspectorate (ISI) "Met all standards (2025 EQI, post-2023 framework)" and TASIS The American School in England is Independent Schools Inspectorate (ISI) "Met all standards (2023 routine, post-2023 framework)" — a rare pairing where an official quality rating can be compared head-to-head. Both run the same curriculum (American, IB), so the differences come down to pathway detail, campus culture, and specific language/boarding arrangements rather than the curriculum framework itself. On cost, ACS International Schools has the noticeably lower entry fee — a material difference for budget-conscious families. See the table below for the figures, and verify against each school's own published fees.
Key Facts
| ACS International Schools | TASIS The American School in England | |
|---|---|---|
| Curriculum | American / IB | American / IB |
| Ages | 2-18 (Cobham); 3-18 (Egham, Hillingdon) | 3-18 |
| Languages of instruction | English | English |
| Annual fees | ACS Cobham 2026-2027 day tuition GBP 9,950-39,960/yr; 7-day boarding (Grades 8-12) up to GBP 69,060/yr inclusive | Day £15,600-£37,170/yr; boarding £69,650/yr (2026-27, inc. VAT) |
| Enrollment | 2,200 | 646 |
| Boarding | Yes | Yes |
| Inspection rating | Independent Schools Inspectorate (ISI): Met all standards (2025 EQI, post-2023 framework) | Independent Schools Inspectorate (ISI): Met all standards (2023 routine, post-2023 framework) |
| Accreditations | New England Association of Schools and Colleges (NEASC), College Board, International Baccalaureate Organization, Educational Collaborative for International Schools (ECIS), Independent Schools Association (ISA) | NEASC, CIS, IB, ISA |
Strengths
- ✓Dual American (High School Diploma plus AP) and IB pathways under one operator, rare in the London market
- ✓ACS Egham offers all four IB programmes (PYP, MYP, DP, CP) - a full through-IB continuum
- ✓Highly international community of 70+ nationalities with structured EAL and home-language support
- ✓Long-established (since 1967) with NEASC accreditation and College Board / IB partnerships
- ✓Boarding available at Cobham (Grades 8-12), including flexible temporary boarding options
- ✓Dual American Diploma plus AP and IB Diploma pathways, giving families genuine curriculum choice in the Upper School
- ✓Triple accreditation by NEASC, CIS and the IB, plus ISA membership and ISI inspection
- ✓Highly international community of more than 70 nationalities
- ✓Boarding available from age 13, with a green Surrey campus close to London and Heathrow
- ✓Dedicated International Section providing English-as-an-additional-language support
Trade-offs
- !Premium fees, with senior-year day tuition near GBP 40,000 and full boarding around GBP 69,000 a year at Cobham
- !IB continuum breadth (all four programmes) is concentrated at Egham, not uniform across all three campuses
- !IGCSE is not offered, so families wanting a British GCSE route are not served
- !Current ISI framework yields a 'met all standards' outcome rather than a published top graded band
- !Fees sit at the premium end, with full-year boarding at £69,650 and senior day fees above £37,000
- !No published verbatim 'Excellent' ISI grade, as recent inspections use the met / not-met framework
- !Less suited to families seeking a British GCSE / A-Level route, which the school does not offer
- !Quantitative IB and AP results are not prominently published, limiting outcome comparison
Best Fit For
- • Internationally mobile families wanting a US diploma plus AP and/or IB pathway
- • Students targeting US university applications who value AP and a transcript-based diploma
- • Families needing boarding within commuting distance of London (Cobham)
- • Children needing EAL support within a multinational peer group
- • American and international families wanting a US-style education near London
- • Students who may relocate within the global TASIS or US university system
- • Families seeking a choice between AP and the IB Diploma under one roof
- • Boarders aged 13-18 wanting a campus close to Heathrow
University Placement
School-reported · not independently verified
School-reported, unverified: ACS promotes US and international university destinations across its alumni, but no independently verified placement figures were found.
School-reported, unverified: graduates pursue admission to universities in the United States, the United Kingdom and worldwide; specific destination data was not verified from a primary source.
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Frequently Asked Questions
Should I choose ACS International Schools or TASIS The American School in England?
ACS International Schools is best for: Internationally mobile families wanting a US diploma plus AP and/or IB pathway. TASIS The American School in England is best for: American and international families wanting a US-style education near London. The right choice depends on target curriculum, budget, and family priorities — the two are not linearly comparable.
How do fees compare between ACS International Schools and TASIS The American School in England?
ACS International Schools: ACS Cobham 2026-2027 day tuition GBP 9,950-39,960/yr; 7-day boarding (Grades 8-12) up to GBP 69,060/yr inclusive. TASIS The American School in England: Day £15,600-£37,170/yr; boarding £69,650/yr (2026-27, inc. VAT). Verify against each school's own published fees; some figures are sourced from third-party aggregators.
What curricula do ACS International Schools and TASIS The American School in England offer?
ACS International Schools: American, IB. TASIS The American School in England: American, IB. ACS International Schools inspection: Independent Schools Inspectorate (ISI) "Met all standards (2025 EQI, post-2023 framework)". TASIS The American School in England inspection: Independent Schools Inspectorate (ISI) "Met all standards (2023 routine, post-2023 framework)".
Do ACS International Schools or TASIS The American School in England offer boarding?
ACS International Schools: offers boarding. TASIS The American School in England: offers boarding.
Questions parents ask
This comparison is BrightKey's independent assessment using verifiable public data only. University-placement figures are school-reported and not independently verified. BrightKey takes no payments from schools. Our method →