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 82Page 1 of 4EES period: 202425⚠️ Small sample: 82 schools matched all filters

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#	School	Composite score	Type	Region	Ofsted
1	The Perse School	88.5 composite Ofsted25.0 Att830.7 EM5+32.8	Independent · Day · 6th	Unknown, East of England	—
2	New Hall School	80.5 composite Ofsted25.0 Att826.1 EM5+29.4	Independent · Boarding · 6th	Chelmsford, East of England	—
3	Abbot's Hill School	77.5 composite Ofsted25.0 Att825.5 EM5+27.0	Independent · Day	Hemel Hempstead, East of England	—
4	Royal Masonic School for Girls	74.7 composite Ofsted25.0 Att824.5 EM5+25.1	Independent · Boarding · 6th	Rickmansworth, East of England	—
5	The Peterborough School	72.0 composite Ofsted25.0 Att822.5 EM5+24.4	Independent · Day · 6th	Peterborough, East of England	—
6	OneSchool Global UK Colchester Campus	69.6 composite Ofsted25.0 Att821.6 EM5+23.1	Independent · Day · 6th	Colchester, East of England	—
7	Colchester Prep & High School	69.3 composite Ofsted25.0 Att822.6 EM5+21.7	Independent · Day	Colchester, East of England	—
8	St Francis College	68.8 composite Ofsted25.0 Att821.1 EM5+22.8	Independent · Boarding · 6th	Letchworth Garden City, East of England	—
9	St Christopher School	68.2 composite Ofsted25.0 Att821.6 EM5+21.6	Independent · Boarding · 6th	Letchworth Garden City, East of England	—
10	Thorpe Hall School	66.0 composite Ofsted25.0 Att820.3 EM5+20.7	Independent · Day	Unknown, East of England	—
11	Sancton Wood School	65.2 composite Ofsted25.0 Att819.4 EM5+20.8	Independent · Day	Unknown, East of England	—
12	Ipswich School	65.2 composite Att829.5 EM5+35.7	Independent · Boarding · 6th	Ipswich, East of England	—
13	Brentwood School	62.5 composite Ofsted25.0 Att811.4 EM5+26.1	Independent · Boarding · 6th	Brentwood, East of England	—
14	Gosfield School	61.8 composite Ofsted25.0 Att818.7 EM5+18.1	Independent · Day · 6th	Unknown, East of England	—
15	St Mary's School for Girls	61.0 composite Att828.8 EM5+32.1	Independent · Day · 6th	Colchester, East of England	—
16	The Purcell School	60.8 composite Ofsted25.0 Att817.7 EM5+18.1	Independent · Boarding · 6th	Unknown, East of England	—
17	Sherrardswood School	60.6 composite Ofsted25.0 Att819.3 EM5+16.4	Independent · Day · 6th	Welwyn, East of England	—
18	Wisbech Grammar School	59.9 composite Ofsted25.0 Att818.0 EM5+16.9	Independent · Boarding · 6th	Cambridgeshire, East of England	—
19	OneSchool Global UK - Biggleswade Campus	57.8 composite Att825.6 EM5+32.1	Independent · Day · 6th	Biggleswade, East of England	—
20	The King's School	56.2 composite Att825.7 EM5+30.5	Independent · Day	Harpenden, East of England	—
21	Bedford Greenacre Independent School	55.3 composite Ofsted25.0 Att816.6 EM5+13.6	Independent · Day · 6th	Bedford, East of England	—
22	Holmwood House School	55.0 composite Ofsted55.0	Independent · Boarding	Colchester, East of England	—
23	Stanborough Secondary School	54.0 composite Ofsted25.0 Att816.3 EM5+12.7	Independent · Day · 6th	Watford, East of England	—
24	St Margaret's School	53.0 composite Att824.4 EM5+28.6	Independent · Boarding · 6th	Bushey, East of England	—
25	Saint Felix School	51.6 composite Ofsted25.0 Att815.2 EM5+11.3	Independent · Boarding · 6th	Southwold, 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.