| 1 | Reading School Period 202425 | 8.25 | Grammar · Boarding · 6th | Reading, South East | Outstanding |
| 2 | Dartford Grammar School Period 202425 | 7.99 | Grammar · Day · 6th | Dartford, South East | Outstanding |
| 3 | The Judd School Period 202425 | 7.37 | Grammar · Day · 6th | Tonbridge, South East | — |
| 4 | The Royal Grammar School, High Wycombe Period 202425 | 7.18 | Grammar · Boarding · 6th | High Wycombe, South East | Good |
| 5 | Dr Challoner's Grammar School Period 202425 | 7.12 | Grammar · Day · 6th | Amersham, South East | Outstanding |
| 6 | Aylesbury Grammar School Period 202425 | 6.92 | Grammar · Day · 6th | Aylesbury, South East | Outstanding |
| 7 | Sir Joseph Williamson's Mathematical School Period 202425 | 6.82 | Grammar · Day · 6th | Rochester, South East | Outstanding |
| 8 | The Skinners' School Period 202425 | 6.76 | Grammar · Day · 6th | Tunbridge Wells, South East | Good |
| 9 | John Hampden Grammar School Period 202425 | 6.69 | Grammar · Day · 6th | High Wycombe, South East | Outstanding |
| 10 | Oakwood Park Grammar School Period 202425 | 6.60 | Grammar · Day · 6th | Maidstone, South East | — |
| 11 | Maidstone Grammar School Period 202425 | 6.57 | Grammar · Day · 6th | Maidstone, South East | — |
| 12 | The Norton Knatchbull School Period 202425 | 6.52 | Grammar · Day · 6th | Ashford, South East | Good |
| 13 | Gravesend Grammar School Period 202425 | 6.36 | Grammar · Day · 6th | Gravesend, South East | — |
| 14 | Holcombe Grammar School Period 202425 | 5.97 | Grammar · Day · 6th | Chatham, South East | — |
| 15 | Dover Grammar School for Boys Period 202425 | 5.94 | Grammar · Day · 6th | Dover, South East | — |
| 16 | Simon Langton Grammar School for Boys Period 202425 | 5.92 | Grammar · Day · 6th | Canterbury, South East | — |
| 17 | Tunbridge Wells Grammar School for Boys Period 202425 | 5.88 | Grammar · Day · 6th | Tunbridge Wells, South East | — |
| 18 | Borden Grammar School Period 202425 | 5.84 | Grammar · Day · 6th | Sittingbourne, South East | — |
| 19 | Wilmington Grammar School for Boys Period 202425 | 5.73 | Grammar · Day · 6th | Dartford, South East | — |
| 20 | The Harvey Grammar School Period 202425 | 5.69 | Grammar · Day · 6th | Folkestone, South East | — |
| 21 | Glyn School Period 202425 | 5.28 | Academy · Day · 6th | Epsom, South East | Outstanding |
| 22 | The Forest School Period 202425 | 4.62 | Academy · Day · 6th | Wokingham, South East | Good |
| 23 | St Birinus School Period 202425 | 4.44 | Academy · Day · 6th | Didcot, South East | — |
| 24 | The Windsor Boys' School Period 202425 | 4.30 | Academy · Day · 6th | Windsor, South East | — |
| 25 | Leigh Academy Tonbridge Period 202425 | 4.12 | Academy · Day · 6th | Tonbridge, South East | Good |