| 1 | Kendrick School Period 202425 | 84.0 | Grammar · Day · 6th | Reading, South East | Outstanding |
| 2 | Reading School Period 202425 | 83.0 | Grammar · Boarding · 6th | Reading, South East | Outstanding |
| 3 | Dartford Grammar School Period 202425 | 79.9 | Grammar · Day · 6th | Dartford, South East | Outstanding |
| 4 | Upton Court Grammar School Period 202425 | 79.9 | Grammar · Day · 6th | Slough, South East | Outstanding |
| 5 | Dr Challoner's High School Period 202425 | 79.1 | Grammar · Day · 6th | Amersham, South East | Outstanding |
| 6 | The Judd School Period 202425 | 78.4 | Grammar · Day · 6th | Tonbridge, South East | — |
| 7 | Langley Grammar School Period 202425 | 77.6 | Grammar · Day · 6th | Langley, South East | Outstanding |
| 8 | St Bernard's Catholic Grammar School Period 202425 | 77.3 | Grammar · Day · 6th | Slough, South East | Outstanding |
| 9 | Tonbridge Grammar School Period 202425 | 77.2 | Grammar · Day · 6th | Tonbridge, South East | Outstanding |
| 10 | Beaconsfield High School Period 202425 | 75.9 | Grammar · Day · 6th | Beaconsfield, South East | Outstanding |
| 11 | Herschel Grammar School Period 202425 | 75.8 | Grammar · Day · 6th | Slough, South East | Outstanding |
| 12 | Dartford Grammar School for Girls Period 202425 | 75.5 | Grammar · Day · 6th | Dartford, South East | — |
| 13 | Aylesbury Grammar School Period 202425 | 74.5 | Grammar · Day · 6th | Aylesbury, South East | Outstanding |
| 14 | Aylesbury High School Period 202425 | 74.3 | Grammar · Day · 6th | Aylesbury, South East | Outstanding |
| 15 | Chesham Grammar School Period 202425 | 74.0 | Grammar · Day · 6th | Chesham, South East | — |
| 16 | Dr Challoner's Grammar School Period 202425 | 73.9 | Grammar · Day · 6th | Amersham, South East | Outstanding |
| 17 | The Royal Grammar School, High Wycombe Period 202425 | 73.9 | Grammar · Boarding · 6th | High Wycombe, South East | Good |
| 18 | Wycombe High School Period 202425 | 73.9 | Grammar · Day · 6th | High Wycombe, South East | Outstanding |
| 19 | Royal Latin School Period 202425 | 73.5 | Grammar · Day · 6th | Buckingham, South East | Good |
| 20 | Tunbridge Wells Girls' Grammar School Period 202425 | 73.4 | Grammar · Day · 6th | Tunbridge Wells, South East | Outstanding |
| 21 | Sir Henry Floyd Grammar School Period 202425 | 73.2 | Grammar · Day · 6th | Aylesbury, South East | Outstanding |
| 22 | Sir William Borlase's Grammar School Period 202425 | 72.4 | Grammar · Day · 6th | Marlow, South East | Outstanding |
| 23 | John Hampden Grammar School Period 202425 | 72.3 | Grammar · Day · 6th | High Wycombe, South East | Outstanding |
| 24 | The Skinners' School Period 202425 | 70.8 | Grammar · Day · 6th | Tunbridge Wells, South East | Good |
| 25 | Invicta Grammar School Period 202425 | 70.8 | Grammar · Day · 6th | Maidstone, South East | Outstanding |