BSO Inspection Report
The Result
In March 2026, Harrow International School Bangkok was inspected by the Education Development Trust (EDT), the independent inspectorate assessing British curriculum schools worldwide on behalf of the British government.
We are incredibly proud to share that our school received an Outstanding rating across every single area of school life — for the second consecutive time. This makes us the first all-through school in the world to achieve and maintain this distinction.
Outstanding is the highest grade possible. It reflects what we believe our community experiences every day: a school where children are genuinely happy, deeply supported, and achieving at the very highest levels.
"Harrow International School Bangkok is an outstanding school and provides an outstanding quality of education for pupils from 18 months to 18 years."
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The first all-through school in Thailand to achieve an Outstanding rating across every area twice in a row.
Our Report Card
The inspection team judged Harrow Bangkok outstanding in all eleven assessed areas:
| Area of Assessment | Rating |
|---|---|
| Attainment & Progress — English | Outstanding |
| Attainment & Progress — Mathematics | Outstanding |
| Attainment & Progress — Science | Outstanding |
| Attainment & Progress — Other Subjects | Outstanding |
| Quality of Curriculum | Outstanding |
| Teaching, Learning & Assessment | Outstanding |
| Spiritual, Moral, Social & Cultural Development | Outstanding |
| Welfare, Health & Safety | Outstanding |
| Leadership & Management | Outstanding |
| Early Years Provision | Outstanding |
| Sixth Form Provision | Outstanding |
More Than Results
The inspection team highlighted the remarkable exam results our pupils achieved in 2025, placing Harrow Bangkok among the top-performing schools in the world.
But results tell only part of the story. What struck inspectors most was the kind of community we are — one where pupils demonstrate courage, honour, humility, and fellowship in everything they do.
That is a reflection of our pupils, and of you.
About EDT & BSO
The Education Development Trust (EDT) is the leading inspectorate for British international schools worldwide, aligned with the British Schools Overseas (BSO) standards — the benchmark for rigorous, high-quality British education globally. BSO accreditation is a trusted mark of quality and assurance for school communities, parents, and pupils alike.
Every three years, Harrow Bangkok undergoes a full BSO inspection across all aspects of school life. We embrace this process wholeheartedly — as a commitment to meeting the highest international standards, a challenge to be ever better, and a moment to reflect carefully on how we continue to strengthen the educational experience for every pupil.
More than a formal evaluation, inspection is an opportunity to celebrate what we do well and identify where we can go further.
Kind regards,
James Murphy-O'Connor
Head Master, Harrow International School Bangkok