Halcyon London International School vs TASIS The American School in England
🇬🇧 London · Side-by-side comparison on verifiable public data.
Both carry a public inspection verdict: Halcyon London International School is Independent Schools Inspectorate (ISI) "Met all standards (2024 routine, 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. One practical difference: TASIS The American School in England offers boarding while the other is day-only — decisive for families who need a residential option. Verify current fees against each school's own figures (see the table below).
Key Facts
| Halcyon London International School | TASIS The American School in England | |
|---|---|---|
| Curriculum | IB | American / IB |
| Ages | 11-18 | 3-18 |
| Languages of instruction | English | English |
| Annual fees | £41,040-£42,912/year incl. VAT (2026/27) | Day £15,600-£37,170/yr; boarding £69,650/yr (2026-27, inc. VAT) |
| Enrollment | 172 | 646 |
| Boarding | Day only | Yes |
| Inspection rating | Independent Schools Inspectorate (ISI): Met all standards (2024 routine, post-2023 framework) | Independent Schools Inspectorate (ISI): Met all standards (2023 routine, post-2023 framework) |
| Accreditations | IB World School, ISI-inspected (DfE-regulated) | NEASC, CIS, IB, ISA |
Strengths
- ✓IB Diploma average of 35 for the Class of 2025, above both UK and world averages, with recent perfect scores of 45
- ✓Continuous, focused IB pathway (MYP then DP) delivered by subject specialists with strong inquiry-led teaching
- ✓Small, intimate community (around 172 pupils) enabling close staff-pupil relationships and individual learning mentors
- ✓Genuinely international, largely bilingual student body with a strong inclusion, diversity and global-citizenship culture
- ✓Innovation-led ethos, including documented integration of artificial intelligence into the curriculum
- ✓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
- !Limited on-site sport and outdoor space; inspectors asked leaders to extend outdoor and physical-skills opportunities
- !Operates within a shared, leased central-London building rather than a self-contained campus
- !Young school (opened 2013) with a comparatively short track record
- !Small scale and secondary-only remit limit breadth of facilities, cohort size, and alumni network versus larger London internationals
- !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 an unbroken IB MYP-to-Diploma route in central London
- • Bilingual or multilingual students, including those targeting the IB bilingual diploma
- • Families who value a small, close-knit, innovation-led environment over a large traditional campus
- • Students who thrive on inquiry-based learning rather than a GCSE/A-level track
- • 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: the Class of 2025 saw graduates progress to Russell Group universities and to specialist art, music and drama colleges in the UK and internationally.
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.
More Comparisons
Frequently Asked Questions
Should I choose Halcyon London International School or TASIS The American School in England?
Halcyon London International School is best for: Internationally mobile families wanting an unbroken IB MYP-to-Diploma route in central London. 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 Halcyon London International School and TASIS The American School in England?
Halcyon London International School: £41,040-£42,912/year incl. VAT (2026/27). 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 Halcyon London International School and TASIS The American School in England offer?
Halcyon London International School: IB. TASIS The American School in England: American, IB. Halcyon London International School inspection: Independent Schools Inspectorate (ISI) "Met all standards (2024 routine, post-2023 framework)". TASIS The American School in England inspection: Independent Schools Inspectorate (ISI) "Met all standards (2023 routine, post-2023 framework)".
Do Halcyon London International School or TASIS The American School in England offer boarding?
Halcyon London International School: day school only. 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 →