| 1 | Langley Grammar School | 68.3 compositeOfsted15.3 AAB%9.7 VA10.1 Att815.5 EM5+17.7 | Grammar · Day · 6th | Langley, South East | Outstanding 2021-11-24×0.85 |
| 2 | Sir William Borlase's Grammar School | 67.4 compositeOfsted18.0 AAB%8.0 VA9.5 Att814.5 EM5+17.4 | Grammar · Day · 6th | Marlow, South East | Outstanding 2024-05-01 |
| 3 | Herschel Grammar School | 66.7 compositeOfsted18.0 AAB%7.2 VA8.6 Att815.2 EM5+17.8 | Grammar · Day · 6th | Slough, South East | Outstanding 2024-05-21 |
| 4 | St Bernard's Catholic Grammar School | 66.2 compositeOfsted18.0 AAB%5.8 VA9.3 Att815.5 EM5+17.7 | Grammar · Day · 6th | Slough, South East | Outstanding 2023-11-07 |
| 5 | Upton Court Grammar School | 65.9 compositeOfsted15.3 AAB%7.3 VA9.4 Att816.0 EM5+17.9 | Grammar · Day · 6th | Slough, South East | Outstanding 2022-11-29×0.85 |
| 6 | Sir Henry Floyd Grammar School | 64.5 compositeOfsted18.0 AAB%5.4 VA9.0 Att814.6 EM5+17.5 | Grammar · Day · 6th | Aylesbury, South East | Outstanding 2024-02-20 |
| 7 | Royal Latin School | 63.2 compositeOfsted11.5 AAB%9.4 VA10.6 Att814.7 EM5+17.1 | Grammar · Day · 6th | Buckingham, South East | Good 2022-11-15×0.85 |
| 8 | St Andrew's Catholic School | 62.4 compositeOfsted18.0 AAB%6.3 VA10.5 Att813.0 EM5+14.5 | Academy · Day · 6th | Leatherhead, South East | Outstanding 2024-05-22 |
| 9 | Hinchley Wood School | 61.3 compositeOfsted18.0 AAB%4.8 VA11.0 Att812.9 EM5+14.6 | Academy · Day · 6th | Esher, South East | Outstanding 2023-10-03 |
| 10 | St Peter's Catholic School | 61.1 compositeOfsted24.7 Att817.4 EM5+19.0 | Academy · Day · 6th | Guildford, South East | Outstanding 2024-05-15 |
| 11 | Gillotts School | 60.2 compositeOfsted24.7 Att816.8 EM5+18.7 | Academy · Day | Henley-on-Thames, South East | Outstanding 2023-06-27 |
| 12 | Chesham Grammar School | 58.3 compositeAAB%9.0 VA12.1 Att817.1 EM5+20.1 | Grammar · Day · 6th | Chesham, South East | — 2025-03-04 |
| 13 | Saint George Catholic Voluntary Aided College Southampton | 58.2 compositeOfsted24.7 Att816.4 EM5+17.1 | State · Day | Southampton, South East | Outstanding 2023-06-27 |
| 14 | Dane Court Grammar School | 57.7 compositeOfsted13.2 VA10.1 Att815.1 EM5+19.3 | Grammar · Day · 6th | Broadstairs, South East | Good 2022-05-10×0.85 |
| 15 | Cranbrook School | 55.3 compositeOfsted11.5 AAB%3.9 VA11.0 Att813.4 EM5+15.5 | Grammar · Boarding · 6th | Cranbrook, South East | Good 2022-03-22×0.85 |
| 16 | Bartholomew School | 55.2 compositeOfsted18.0 AAB%4.6 VA9.2 Att811.4 EM5+12.0 | Academy · Day · 6th | Witney, South East | Outstanding 2024-05-14 |
| 17 | The Cherwell School | 55.1 compositeOfsted15.3 AAB%6.2 VA10.0 Att811.7 EM5+11.9 | Academy · Day · 6th | Oxford, South East | Outstanding 2022-10-19×0.85 |
| 18 | Queen Elizabeth's Grammar School | 55.1 compositeOfsted15.7 Att817.8 EM5+21.5 | Grammar · Day · 6th | Faversham, South East | Good 2023-02-28×0.85 |
| 19 | Barton Court Grammar School | 55.0 compositeOfsted9.5 AAB%4.3 VA12.6 Att813.3 EM5+15.3 | Grammar · Day · 6th | Canterbury, South East | Good 2020-02-11×0.7 |
| 20 | Tomlinscote School | 54.7 compositeOfsted24.7 Att814.6 EM5+15.4 | Academy · Day | Camberley, South East | Outstanding 2023-11-14 |
| 21 | The Emmbrook School | 54.6 compositeOfsted13.5 AAB%3.9 VA17.1 Att810.1 EM5+10.0 | Academy · Day · 6th | Wokingham, South East | Good 2023-10-17 |
| 22 | Shoreham Academy | 54.4 compositeOfsted18.0 AAB%2.9 VA10.8 Att811.0 EM5+11.8 | Academy · Day · 6th | Shoreham-by-Sea, South East | Outstanding 2024-02-07 |
| 23 | Tanbridge House School | 54.2 compositeOfsted24.7 Att814.9 EM5+14.7 | State · Day | Horsham, South East | Outstanding 2024-06-11 |
| 24 | Bohunt School | 53.6 compositeOfsted13.5 AAB%4.8 VA11.8 Att811.3 EM5+12.3 | Academy · Day · 6th | Liphook, South East | Good 2024-03-06 |
| 25 | Beacon Academy | 53.5 compositeOfsted24.7 Att813.8 EM5+15.1 | Academy · Day · 6th | Crowborough, South East | Outstanding 2024-04-16 |