| 1 | Upton Court Grammar School Period 202425 | 79.9 | Grammar · Day · 6th | Slough, South East | Outstanding |
| 2 | Langley Grammar School Period 202425 | 77.6 | Grammar · Day · 6th | Langley, South East | Outstanding |
| 3 | St Bernard's Catholic Grammar School Period 202425 | 77.3 | Grammar · Day · 6th | Slough, South East | Outstanding |
| 4 | Herschel Grammar School Period 202425 | 75.8 | Grammar · Day · 6th | Slough, South East | Outstanding |
| 5 | Chesham Grammar School Period 202425 | 74.0 | Grammar · Day · 6th | Chesham, South East | — |
| 6 | Royal Latin School Period 202425 | 73.5 | Grammar · Day · 6th | Buckingham, South East | Good |
| 7 | Sir Henry Floyd Grammar School Period 202425 | 73.2 | Grammar · Day · 6th | Aylesbury, South East | Outstanding |
| 8 | Sir William Borlase's Grammar School Period 202425 | 72.4 | Grammar · Day · 6th | Marlow, South East | Outstanding |
| 9 | Burnham Grammar School Period 202425 | 70.1 | Grammar · Day · 6th | Slough, South East | — |
| 10 | Cranbrook School Period 202425 | 66.9 | Grammar · Boarding · 6th | Cranbrook, South East | Good |
| 11 | Barton Court Grammar School Period 202425 | 66.4 | Grammar · Day · 6th | Canterbury, South East | Good |
| 12 | Dane Court Grammar School Period 202425 | 65.3 | Grammar · Day · 6th | Broadstairs, South East | Good |
| 13 | St Andrew's Catholic School Period 202425 | 65.2 | Academy · Day · 6th | Leatherhead, South East | Outstanding |
| 14 | Queen Elizabeth's Grammar School Period 202425 | 65.1 | Grammar · Day · 6th | Faversham, South East | Good |
| 15 | Salesian School, Chertsey Period 202425 | 64.9 | Academy · Day · 6th | Chertsey, South East | — |
| 16 | Hinchley Wood School Period 202425 | 64.5 | Academy · Day · 6th | Esher, South East | Outstanding |
| 17 | Chatham & Clarendon Grammar School Period 202425 | 64.0 | Grammar · Day · 6th | Ramsgate, South East | — |
| 18 | St Peter's Catholic School Period 202425 | 63.6 | Academy · Day · 6th | Guildford, South East | Outstanding |
| 19 | Gordon's School Period 202425 | 63.6 | Academy · Boarding · 6th | Woking, South East | — |
| 20 | Weydon School Period 202425 | 63.5 | Academy · Day | Farnham, South East | Good |
| 21 | Rainham Mark Grammar School Period 202425 | 62.7 | Grammar · Day · 6th | Gillingham, South East | Good |
| 22 | Sir Roger Manwood's School Period 202425 | 62.7 | Grammar · Day · 6th | Sandwich, South East | Good |
| 23 | St Paul's Catholic College Period 202425 | 61.8 | Academy · Day · 6th | Sunbury-on-Thames, South East | — |
| 24 | Gillotts School Period 202425 | 61.3 | Academy · Day | Henley-on-Thames, South East | Outstanding |
| 25 | Saint George Catholic Voluntary Aided College Southampton Period 202425 | 60.0 | State · Day | Southampton, South East | Outstanding |