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 43Page 1 of 2EES period: 202425⚠️ Small sample: 43 schools matched all filters

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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	St Francis College	56.2 composite Ofsted13.5 AAB%8.2 VA10.8 Att811.4 EM5+12.3	Independent · Boarding · 6th	Letchworth Garden City, East of England	—
4	Royal Masonic School for Girls	54.3 composite Ofsted13.5 AAB%2.9 VA11.1 Att813.2 EM5+13.6	Independent · Boarding · 6th	Rickmansworth, East of England	—
5	Brentwood School	51.0 composite Ofsted13.5 AAB%3.5 VA13.7 Att86.2 EM5+14.1	Independent · Boarding · 6th	Brentwood, East of England	—
6	Cardiff Sixth Form College, Cambridge	50.6 composite AAB%25.1 VA25.4	Independent · Boarding · 6th	Unknown, East of England	—
7	Holmwood House School	50.0 composite Ofsted50.0	Independent · Boarding	Colchester, East of England	—
8	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	—
9	Felixstowe International College	46.2 composite Ofsted23.2 VA22.9	Independent · Boarding · 6th	Felixstowe, East of England	—
10	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	—
11	St Margaret's School	43.9 composite AAB%3.5 VA12.2 Att813.0 EM5+15.2	Independent · Boarding · 6th	Bushey, East of England	—
12	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	—
13	King's Ely	42.8 composite AAB%6.8 VA12.4 Att810.9 EM5+12.6	Independent · Boarding · 6th	Ely, East of England	—
14	Woodbridge School	42.5 composite Ofsted18.0 AAB%5.6 VA10.8 Att88.1 EM5+0.0	Independent · Boarding · 6th	Woodbridge, East of England	—
15	The Stephen Perse Foundation	41.3 composite Ofsted13.5 AAB%8.0 VA9.9 Att810.0 EM5+0.0	Independent · Boarding · 6th	Unknown, East of England	—
16	The Leys School	41.3 composite Ofsted13.5 AAB%8.1 VA10.7 Att89.0 EM5+0.0	Independent · Boarding · 6th	Cambridge, East of England	—
17	Royal Hospital School	40.0 composite Ofsted13.5 AAB%4.7 VA11.4 Att810.2 EM5+0.2	Independent · Boarding · 6th	Ipswich, East of England	—
18	St Joseph's College	39.3 composite Att818.8 EM5+20.4	Independent · Boarding · 6th	Ipswich, East of England	—
19	St Mary's School	38.9 composite Att817.8 EM5+21.1	Independent · Boarding · 6th	cambridge, East of England	—
20	Saint Felix School	37.9 composite Ofsted13.5 AAB%0.0 VA10.1 Att88.2 EM5+6.1	Independent · Boarding · 6th	Southwold, East of England	—
21	Queenswood School	37.5 composite Ofsted37.5	Independent · Boarding · 6th	Hatfield, East of England	—
22	Summerhill School	37.5 composite Ofsted37.5	Independent · Boarding · 6th	Leiston, East of England	—
23	Thetford Grammar School	35.4 composite Ofsted13.5 AAB%4.7 VA10.1 Att87.1 EM5+0.0	Independent · Boarding · 6th	Unknown, East of England	—
24	Kimbolton School	35.3 composite Ofsted13.5 AAB%3.9 VA11.2 Att86.6 EM5+0.0	Independent · Boarding · 6th	Huntingdon, East of England	—
25	Bedford School	34.9 composite Ofsted13.5 AAB%8.1 VA10.4 Att82.9 EM5+0.0	Independent · Boarding · 6th	Bedford, 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.