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/ISI + A-Level + GCSE + KS2 + prep-destination signals.

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	New Hall School	59.1 composite Ofsted13.5 AAB%5.2 VA10.4 Att814.1 EM5+15.9	Independent · Boarding · 6th	Chelmsford, East of England	—
2	Ipswich School	57.4 composite AAB%7.9 VA14.8 Att815.7 EM5+19.0	Independent · Boarding · 6th	Ipswich, East of England	—
3	Thomas's College	55.9 composite Ofsted18.5 Att817.7 EM5+19.7	Independent · Boarding · 6th	Richmond, London	—
4	d'Overbroeck's	54.0 composite AAB%6.8 VA13.2 Att814.9 EM5+18.9	Independent · Boarding · 6th	Oxford, South East	—
5	Ratcliffe College	53.4 composite Ofsted13.5 AAB%5.5 VA12.0 Att810.1 EM5+12.4	Independent · Boarding · 6th	Unknown, East Midlands	—
6	West Buckland School	52.6 composite Ofsted13.5 AAB%5.1 VA10.7 Att810.8 EM5+12.4	Independent · Boarding · 6th	Barnstaple, South West	—
7	Sherfield School	52.1 composite Ofsted13.5 AAB%0.0 VA10.7 Att813.3 EM5+14.7	Independent · Boarding · 6th	Hampshire, South East	—
8	North London Grammar School	51.5 composite Ofsted18.5 Att815.2 EM5+17.8	Independent · Boarding · 6th	London, London	—
9	Brentwood School	51.0 composite Ofsted13.5 AAB%3.5 VA13.7 Att86.2 EM5+14.1	Independent · Boarding · 6th	Brentwood, East of England	—
10	Cardiff Sixth Form College, Cambridge	50.6 composite AAB%25.1 VA25.4	Independent · Boarding · 6th	Unknown, East of England	—
11	Cundall Manor School	50.2 composite Ofsted18.5 Att816.6 EM5+15.1	Independent · Boarding	Unknown, Yorkshire and the Humber	—
12	Holmwood House School	50.0 composite Ofsted50.0	Independent · Boarding	Colchester, East of England	—
13	Ashville College	49.7 composite Ofsted13.5 AAB%5.1 VA12.3 Att89.9 EM5+8.8	Independent · Boarding · 6th	Harrogate, Yorkshire and the Humber	—
14	St Christopher School	49.1 composite Ofsted13.5 AAB%2.1 VA10.2 Att811.7 EM5+11.7	Independent · Boarding · 6th	Letchworth Garden City, East of England	—
15	Brighton College	48.3 composite Ofsted13.5 AAB%12.7 VA10.5 Att811.6 EM5+0.0	Independent · Boarding · 6th	Brighton, South East	—
16	Frensham Heights School	47.8 composite Ofsted13.5 AAB%1.7 VA11.0 Att89.2 EM5+12.4	Independent · Boarding · 6th	Farnham, South East	—
17	Tettenhall College Incorporated	46.6 composite Ofsted13.5 AAB%3.2 VA9.2 Att810.7 EM5+10.0	Independent · Boarding · 6th	Wolverhampton, West Midlands	—
18	Oswestry School	46.4 composite Ofsted13.5 AAB%3.9 VA10.5 Att89.7 EM5+8.9	Independent · Boarding · 6th	Oswestry, West Midlands	—
19	Felixstowe International College	46.2 composite Ofsted23.2 VA22.9	Independent · Boarding · 6th	Felixstowe, East of England	—
20	Wisbech Grammar School	45.7 composite Ofsted13.5 AAB%3.0 VA10.3 Att89.7 EM5+9.1	Independent · Boarding · 6th	Cambridgeshire, East of England	—
21	Shebbear College	45.0 composite Ofsted13.5 AAB%3.2 VA10.6 Att89.2 EM5+8.5	Independent · Boarding · 6th	Beaworthy, South West	—
22	St Margaret's School	43.9 composite AAB%3.5 VA12.2 Att813.0 EM5+15.2	Independent · Boarding · 6th	Bushey, East of England	—
23	The Purcell School	43.4 composite Ofsted13.5 AAB%0.5 VA10.1 Att89.5 EM5+9.8	Independent · Boarding · 6th	Unknown, East of England	—
24	Sibford School	43.1 composite Ofsted13.5 AAB%1.0 VA13.6 Att88.1 EM5+6.9	Independent · Boarding · 6th	Banbury, South East	—
25	King's Ely	42.8 composite AAB%6.8 VA12.4 Att810.9 EM5+12.6	Independent · Boarding · 6th	Ely, East of England	—

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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.