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	The Perse School	1,735 pupils	Independent · Day · 6th	Unknown, East of England	— ISI · Good
2	Merchant Taylors' School	959 pupils	Independent · Day · 6th	Northwood, East of England	— ISI · Good
3	St Albans High School for Girls	1,128 pupils	Independent · Day · 6th	Unknown, East of England	— ISI · Good
4	Haberdashers' Girls' School	1,132 pupils	Independent · Day · 6th	Borehamwood, East of England	— ISI · Good
5	Brentwood School	1,878 pupils	Independent · Boarding · 6th	Brentwood, East of England	— ISI · Good
6	Haberdashers' Boys' School	1,457 pupils	Independent · Day · 6th	Unknown, East of England	—
7	Cardiff Sixth Form College, Cambridge	98 pupils	Independent · Boarding · 6th	Unknown, East of England	—
8	The Stephen Perse Foundation	1,624 pupils	Independent · Boarding · 6th	Unknown, East of England	— ISI · Good
9	The Leys School	564 pupils	Independent · Boarding · 6th	Cambridge, East of England	— ISI · Good
10	Royal Masonic School for Girls	928 pupils	Independent · Boarding · 6th	Rickmansworth, East of England	— ISI · Good
11	Aldenham School	841 pupils	Independent · Boarding · 6th	Elstree, East of England	— ISI · Good
12	Kimbolton School	1,071 pupils	Independent · Boarding · 6th	Huntingdon, East of England	— ISI · Good
13	New Hall School	1,335 pupils	Independent · Boarding · 6th	Chelmsford, East of England	— ISI · Good
14	Woodbridge School	739 pupils	Independent · Boarding · 6th	Woodbridge, East of England	— ISI · Excellent
15	Bedford School	1,070 pupils	Independent · Boarding · 6th	Bedford, East of England	— ISI · Good
16	St Christopher School	496 pupils	Independent · Boarding · 6th	Letchworth Garden City, East of England	— ISI · Good
17	Ipswich School	1,132 pupils	Independent · Boarding · 6th	Ipswich, East of England	—
18	Wisbech Grammar School	593 pupils	Independent · Boarding · 6th	Cambridgeshire, East of England	— ISI · Good
19	Felsted School	1,002 pupils	Independent · Boarding · 6th	Felsted, East of England	— ISI · Good
20	St Edmund's College	791 pupils	Independent · Boarding · 6th	Ware, East of England	—
21	St Albans School	887 pupils	Independent · Day · 6th	St Albans, East of England	— ISI · Good
22	Gresham's School	894 pupils	Independent · Boarding · 6th	Unknown, East of England	—
23	Culford School	895 pupils	Independent · Boarding · 6th	Bury St. Edmunds, East of England	— ISI · Good
24	St Margaret's School	806 pupils	Independent · Boarding · 6th	Bushey, East of England	—
25	Royal Hospital School	545 pupils	Independent · Boarding · 6th	Ipswich, East of England	— ISI · Good

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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.