Secondary · 中学

Secondary · Independent (中学私立)

ISC-tier fee-paying secondary schools (HMC / GSA / IAPS members) with senior-school age range (≥16). Default order: continuous prestige score = manual tier (Clarendon Nine / HMC flagships) + DfE A-Level + GCSE + pupil count + boarding + destination signal. All 506 ISC schools ranked on one transparent scale. Click 'A-Level AAB %' for pure academic-merit. Excludes embassy / small religious / SEN micro-schools.

Sort by:Ofsted Composite · A-Level Composite · GCSE Composite (all)A-Level AAB %A-Level APS / entry Value-addedGCSE Attainment 8 GCSE Eng+Maths 5+EBacc APS

BoardingAny Boarding Day

GenderAny Mixed (混合)Boys (男校)Girls (女校)

RegionUK-wide London South East South West East of England West Midlands East Midlands North West North East Yorkshire and the Humber

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#	School	Ofsted	Type	Region	Ofsted
1	Guildford High School	1,021 pupils	Independent · Day · 6th	Guildford, South East	— ISI · Good
2	St Helen and St Katharine	711 pupils	Independent · Day · 6th	Abingdon, South East	— ISI · Good
3	Notre Dame School	414 pupils	Independent · Day · 6th	Unknown, South East	— ISI · Good
4	Oxford High School GDST	789 pupils	Independent · Day · 6th	Oxford, South East	— ISI · Good
5	The Abbey School Reading	905 pupils	Independent · Day · 6th	Reading, South East	— ISI · Good
6	Walthamstow Hall	473 pupils	Independent · Day · 6th	Sevenoaks, South East	— ISI · Good
7	Tormead School	771 pupils	Independent · Day · 6th	Guildford, South East	— ISI · Good
8	Farnborough Hill	502 pupils	Independent · Day · 6th	Farnborough, South East	— ISI · Good
9	Sir William Perkins's School	528 pupils	Independent · Day · 6th	Unknown, South East	—
10	The Marist School	447 pupils	Independent · Day · 6th	Ascot, South East	— ISI · Good
11	Brighton Girls GDST	412 pupils	Independent · Day · 6th	Unknown, South East	— ISI · Good
12	Portsmouth High School GDST	463 pupils	Independent · Day · 6th	Unknown, South East	— ISI · Good
13	Pipers Corner School	617 pupils	Independent · Day · 6th	High Wycombe, South East	— ISI · Good
14	St Nicholas' School	320 pupils	Independent · Day	Fleet, South East	— ISI · Good
15	Manor House School	281 pupils	Independent · Day	Leatherhead, South East	— ISI · Good
16	St Mary's School	439 pupils	Independent · Day · 6th	Gerrards Cross, South East	—

Source: GIAS school register + Ofsted Management Information — open licence, weekly refresh.

Note on Independent schools: most are inspected by ISI, not Ofsted, so the Ofsted column is empty for many entries. ISI bulk data is not publicly available — sorting by A-Level metrics gives a more meaningful order for this slice.