| 1 | St Bernard's Catholic Grammar School | 94.7 compositeOfsted33.3 Att828.6 EM5+32.7 | Grammar · Day · 6th | Slough, South East | Outstanding 2023-11-07 |
| 2 | Herschel Grammar School | 94.3 compositeOfsted33.3 Att828.1 EM5+32.9 | Grammar · Day · 6th | Slough, South East | Outstanding 2024-05-21 |
| 3 | Sir Henry Floyd Grammar School | 92.8 compositeOfsted33.3 Att827.1 EM5+32.4 | Grammar · Day · 6th | Aylesbury, South East | Outstanding 2024-02-20 |
| 4 | Sir William Borlase's Grammar School | 92.4 compositeOfsted33.3 Att826.8 EM5+32.2 | Grammar · Day · 6th | Marlow, South East | Outstanding 2024-05-01 |
| 5 | Upton Court Grammar School | 91.1 compositeOfsted28.3 Att829.6 EM5+33.1 | Grammar · Day · 6th | Slough, South East | Outstanding 2022-11-29×0.85 |
| 6 | Langley Grammar School | 89.8 compositeOfsted28.3 Att828.7 EM5+32.8 | Grammar · Day · 6th | Langley, South East | Outstanding 2021-11-24×0.85 |
| 7 | Hinchley Wood School | 84.3 compositeOfsted33.3 Att823.9 EM5+27.1 | Academy · Day · 6th | Esher, South East | Outstanding 2023-10-03 |
| 8 | St Andrew's Catholic School | 84.3 compositeOfsted33.3 Att824.1 EM5+26.8 | Academy · Day · 6th | Leatherhead, South East | Outstanding 2024-05-22 |
| 9 | St Peter's Catholic School | 82.5 compositeOfsted33.3 Att823.6 EM5+25.6 | Academy · Day · 6th | Guildford, South East | Outstanding 2024-05-15 |
| 10 | Gillotts School | 81.4 compositeOfsted33.3 Att822.7 EM5+25.3 | Academy · Day | Henley-on-Thames, South East | Outstanding 2023-06-27 |
| 11 | Royal Latin School | 80.1 compositeOfsted21.2 Att827.2 EM5+31.6 | Grammar · Day · 6th | Buckingham, South East | Good 2022-11-15×0.85 |
| 12 | Saint George Catholic Voluntary Aided College Southampton | 78.7 compositeOfsted33.3 Att822.2 EM5+23.1 | State · Day | Southampton, South East | Outstanding 2023-06-27 |
| 13 | Bartholomew School | 76.7 compositeOfsted33.3 Att821.1 EM5+22.2 | Academy · Day · 6th | Witney, South East | Outstanding 2024-05-14 |
| 14 | Dane Court Grammar School | 76.4 compositeOfsted21.2 Att824.2 EM5+30.9 | Grammar · Day · 6th | Broadstairs, South East | Good 2022-05-10×0.85 |
| 15 | Shoreham Academy | 75.4 compositeOfsted33.3 Att820.3 EM5+21.8 | Academy · Day · 6th | Shoreham-by-Sea, South East | Outstanding 2024-02-07 |
| 16 | Cranbrook School | 74.8 compositeOfsted21.2 Att824.8 EM5+28.8 | Grammar · Boarding · 6th | Cranbrook, South East | Good 2022-03-22×0.85 |
| 17 | Queen Elizabeth's Grammar School | 74.4 compositeOfsted21.2 Att824.1 EM5+29.1 | Grammar · Day · 6th | Faversham, South East | Good 2023-02-28×0.85 |
| 18 | Tomlinscote School | 73.9 compositeOfsted33.3 Att819.8 EM5+20.8 | Academy · Day | Camberley, South East | Outstanding 2023-11-14 |
| 19 | Rainham Mark Grammar School | 73.6 compositeOfsted21.2 Att823.2 EM5+29.1 | Grammar · Day · 6th | Gillingham, South East | Good 2022-05-24×0.85 |
| 20 | Tanbridge House School | 73.2 compositeOfsted33.3 Att820.1 EM5+19.8 | State · Day | Horsham, South East | Outstanding 2024-06-11 |
| 21 | Bennett Memorial Diocesan School | 72.6 compositeOfsted33.3 Att820.0 EM5+19.3 | Academy · Day · 6th | Tunbridge Wells, South East | Outstanding 2023-12-13 |
| 22 | Beacon Academy | 72.3 compositeOfsted33.3 Att818.6 EM5+20.4 | Academy · Day · 6th | Crowborough, South East | Outstanding 2024-04-16 |
| 23 | The Cherwell School | 72.0 compositeOfsted28.3 Att821.6 EM5+22.1 | Academy · Day · 6th | Oxford, South East | Outstanding 2022-10-19×0.85 |
| 24 | Sir Roger Manwood's School | 71.5 compositeOfsted21.2 Att823.2 EM5+27.0 | Grammar · Day · 6th | Sandwich, South East | Good 2022-09-27×0.85 |
| 25 | Weydon School | 71.3 compositeOfsted21.2 Att823.5 EM5+26.6 | Academy · Day | Farnham, South East | Good 2023-04-25×0.85 |