Explained
What is a BSO inspection, and why does it matter?
A British Schools Overseas (BSO) inspection is a UK Department for Education-recognised quality inspection of British-curriculum schools outside the UK, carried out by approved bodies against published standards. It is one of the few genuinely external, verifiable quality signals for an international school.
Older-style BSO reports gave a verbatim graded band (e.g. 'Outstanding'), which is why BrightKey tiers a handful of schools — Tanglin (Singapore), Harrow (Bangkok), Kellett (Hong Kong), Doha College — at its top tier. The modern ISI BSO framework is binary pass/fail, not graded, so it cannot by itself justify a top tier.
BrightKey anchors school tiering on a published inspection band wherever a real one exists (UK BSO, Dubai KHDA, Abu Dhabi ADEK). Where no inspectorate exists — e.g. mainland China — tiering is capped on accreditation and curriculum depth instead.
Reviewed by Priscilla Han. BrightKey is independent and takes no payment from schools or universities.
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