| 1 | Reading School | 74.2 composite | Grammar · Boarding · 6th | Reading, South East | Outstanding 2023-11-21 |
| 2 | Sir William Borlase's Grammar School | 65.7 composite | Grammar · Day · 6th | Marlow, South East | Outstanding 2024-05-01 |
| 3 | Langley Grammar School | 65.0 composite | Grammar · Day · 6th | Langley, South East | Outstanding 2021-11-24×0.85 |
| 4 | Dr Challoner's High School | 64.9 composite | Grammar · Day · 6th | Amersham, South East | Outstanding 2023-11-21 |
| 5 | St Andrew's Catholic School | 64.6 composite | Academy · Day · 6th | Leatherhead, South East | Outstanding 2024-05-22 |
| 6 | The Emmbrook School | 63.9 composite | Academy · Day · 6th | Wokingham, South East | Good 2023-10-17 |
| 7 | Tunbridge Wells Girls' Grammar School | 62.5 composite | Grammar · Day · 6th | Tunbridge Wells, South East | Outstanding 2023-09-19 |
| 8 | Herschel Grammar School | 62.5 composite | Grammar · Day · 6th | Slough, South East | Outstanding 2024-05-21 |
| 9 | Hinchley Wood School | 62.5 composite | Academy · Day · 6th | Esher, South East | Outstanding 2023-10-03 |
| 10 | Dr Challoner's Grammar School | 62.3 composite | Grammar · Day · 6th | Amersham, South East | Outstanding 2019-11-05×0.7 |
| 11 | Kendrick School | 61.4 composite | Grammar · Day · 6th | Reading, South East | Outstanding 2022-11-08×0.85 |
| 12 | Invicta Grammar School | 61.4 composite | Grammar · Day · 6th | Maidstone, South East | Outstanding 2024-04-16 |
| 13 | St Bernard's Catholic Grammar School | 61.3 composite | Grammar · Day · 6th | Slough, South East | Outstanding 2023-11-07 |
| 14 | Aylesbury High School | 60.9 composite | Grammar · Day · 6th | Aylesbury, South East | Outstanding 2023-12-05 |
| 15 | Sir Henry Floyd Grammar School | 60.0 composite | Grammar · Day · 6th | Aylesbury, South East | Outstanding 2024-02-20 |
| 16 | Wycombe High School | 59.8 composite | Grammar · Day · 6th | High Wycombe, South East | Outstanding 2024-04-30 |
| 17 | Hazelwick School | 59.4 composite | Academy · Day · 6th | Crawley, South East | Outstanding 2023-10-03 |
| 18 | Upton Court Grammar School | 59.3 composite | Grammar · Day · 6th | Slough, South East | Outstanding 2022-11-29×0.85 |
| 19 | Bartholomew School | 58.9 composite | Academy · Day · 6th | Witney, South East | Outstanding 2024-05-14 |
| 20 | Shoreham Academy | 58.7 composite | Academy · Day · 6th | Shoreham-by-Sea, South East | Outstanding 2024-02-07 |
| 21 | The Cherwell School | 58.4 composite | Academy · Day · 6th | Oxford, South East | Outstanding 2022-10-19×0.85 |
| 22 | Aylesbury Grammar School | 58.2 composite | Grammar · Day · 6th | Aylesbury, South East | Outstanding 2022-11-02×0.85 |
| 23 | Royal Latin School | 58.2 composite | Grammar · Day · 6th | Buckingham, South East | Good 2022-11-15×0.85 |
| 24 | The Holt School | 57.8 composite | Academy · Day · 6th | Wokingham, South East | Outstanding 2023-03-28×0.85 |
| 25 | Bennett Memorial Diocesan School | 57.4 composite | Academy · Day · 6th | Tunbridge Wells, South East | Outstanding 2023-12-13 |