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. Currently sorted by Composite score (period 202425). Composite = weighted Ofsted + Att8 + EM5+ (GCSE).

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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Showing 1–25 of 200Page 1 of 8EES period: 202425

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#	School	Composite score	Type	Region	Ofsted
1	Cheltenham Ladies' College	85.2 composite Ofsted25.0 Att829.0 EM5+31.2	Independent · Boarding · 6th	Cheltenham, South West	—
2	New Hall School	80.5 composite Ofsted25.0 Att826.1 EM5+29.4	Independent · Boarding · 6th	Chelmsford, East of England	—
3	Sherfield School	76.8 composite Ofsted25.0 Att824.6 EM5+27.3	Independent · Boarding · 6th	Hampshire, South East	—
4	Winchester College	76.4 composite Ofsted33.3 Att815.1 EM5+28.0	Independent · Boarding · 6th	Winchester, South East	—
5	Westminster School	76.1 composite Ofsted25.0 Att818.0 EM5+33.1	Independent · Boarding · 6th	London, London	—
6	Thomas's College	75.5 composite Ofsted25.0 Att823.9 EM5+26.7	Independent · Boarding · 6th	Richmond, London	—
7	Royal Masonic School for Girls	74.7 composite Ofsted25.0 Att824.5 EM5+25.1	Independent · Boarding · 6th	Rickmansworth, East of England	—
8	Talbot Heath School	73.7 composite Ofsted25.0 Att822.7 EM5+26.0	Independent · Boarding · 6th	Bournemouth, South West	—
9	Rawdhatul Ilm Wal Huda	72.8 composite Ofsted18.8 Att824.9 EM5+29.2	Independent · Boarding · 6th	Blackburn, North West	Good
10	North London Grammar School	69.6 composite Ofsted25.0 Att820.6 EM5+24.0	Independent · Boarding · 6th	London, London	—
11	Thornton College	69.0 composite Ofsted25.0 Att823.0 EM5+21.0	Independent · Boarding · 6th	Milton Keynes, South East	—
12	St Francis College	68.8 composite Ofsted25.0 Att821.1 EM5+22.8	Independent · Boarding · 6th	Letchworth Garden City, East of England	—
13	St Christopher School	68.2 composite Ofsted25.0 Att821.6 EM5+21.6	Independent · Boarding · 6th	Letchworth Garden City, East of England	—
14	West Buckland School	68.1 composite Ofsted25.0 Att820.0 EM5+23.0	Independent · Boarding · 6th	Barnstaple, South West	—
15	Cundall Manor School	67.8 composite Ofsted25.0 Att822.4 EM5+20.4	Independent · Boarding	Unknown, Yorkshire and the Humber	—
16	Ratcliffe College	66.6 composite Ofsted25.0 Att818.6 EM5+23.0	Independent · Boarding · 6th	Unknown, East Midlands	—
17	Ipswich School	65.2 composite Att829.5 EM5+35.7	Independent · Boarding · 6th	Ipswich, East of England	—
18	Frensham Heights School	65.0 composite Ofsted25.0 Att817.0 EM5+23.0	Independent · Boarding · 6th	Farnham, South East	—
19	d'Overbroeck's	63.7 composite Att828.1 EM5+35.6	Independent · Boarding · 6th	Oxford, South East	—
20	Tettenhall College Incorporated	63.3 composite Ofsted25.0 Att819.8 EM5+18.5	Independent · Boarding · 6th	Wolverhampton, West Midlands	—
21	Brentwood School	62.5 composite Ofsted25.0 Att811.4 EM5+26.1	Independent · Boarding · 6th	Brentwood, East of England	—
22	The Purcell School	60.8 composite Ofsted25.0 Att817.7 EM5+18.1	Independent · Boarding · 6th	Unknown, East of England	—
23	Wisbech Grammar School	59.9 composite Ofsted25.0 Att818.0 EM5+16.9	Independent · Boarding · 6th	Cambridgeshire, East of England	—
24	Ashville College	59.6 composite Ofsted25.0 Att818.4 EM5+16.3	Independent · Boarding · 6th	Harrogate, Yorkshire and the Humber	—
25	Oswestry School	59.4 composite Ofsted25.0 Att818.0 EM5+16.4	Independent · Boarding · 6th	Oswestry, West Midlands	—

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

Composite caveats: Independent schools mostly don't submit to DfE EES, so they appear with low completeness scores (or not at all in the composite ranking). The composite mixes A-Level (Y13) and GCSE (Y11) signals — schools without a sixth form get a small completeness penalty even though it isn't a quality issue. For Independent senior schools, the destination-edge rankings (Oxford / Cambridge feeders) are usually more meaningful than this score.

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.