| 1 | Trinity School Period 202122 | 52.6 | Free School · Day · 6th | Sevenoaks, South East | — |
| 2 | Barton Court Grammar School Period 202223 | 50.0 | Grammar · Day · 6th | Canterbury, South East | Good |
| 3 | Salesian School, Chertsey Period 202122 | 50.0 | Academy · Day · 6th | Chertsey, South East | — |
| 4 | Royal Latin School Period 202122 | 49.2 | Grammar · Day · 6th | Buckingham, South East | Good |
| 5 | St Andrew's Catholic School Period 202122 | 49.0 | Academy · Day · 6th | Leatherhead, South East | Outstanding |
| 6 | Langley Grammar School Period 202122 | 48.6 | Grammar · Day · 6th | Langley, South East | Outstanding |
| 7 | Chatham & Clarendon Grammar School Period 202425 | 48.1 | Grammar · Day · 6th | Ramsgate, South East | — |
| 8 | Sir William Borlase's Grammar School Period 202122 | 47.9 | Grammar · Day · 6th | Marlow, South East | Outstanding |
| 9 | Chesham Grammar School Period 202425 | 46.3 | Grammar · Day · 6th | Chesham, South East | — |
| 10 | St John the Baptist Catholic Comprehensive School, Woking Period 202425 | 46.3 | Academy · Day · 6th | Woking, South East | — |
| 11 | Upton Court Grammar School Period 202122 | 45.7 | Grammar · Day · 6th | Slough, South East | Outstanding |
| 12 | The Burgate School and Sixth Form Period 202122 | 45.5 | Academy · Day · 6th | Fordingbridge, South East | — |
| 13 | Edgbarrow School Period 202122 | 45.0 | Academy · Day · 6th | Crowthorne, South East | Outstanding |
| 14 | Leigh Academy Mascalls Period 202324 | 45.0 | Academy · Day · 6th | Tonbridge, South East | — |
| 15 | The Cherwell School Period 202122 | 45.0 | Academy · Day · 6th | Oxford, South East | Outstanding |
| 16 | Holyport College Period 202122 | 44.9 | Free School · Boarding · 6th | Holyport, South East | Good |
| 17 | Bennett Memorial Diocesan School Period 202122 | 44.7 | Academy · Day · 6th | Tunbridge Wells, South East | Outstanding |
| 18 | Yateley School Period 202223 | 44.4 | State · Day · 6th | Yateley, South East | — |
| 19 | Brighton Aldridge Community Academy Period 202122 | 44.1 | Academy · Day · 6th | Brighton, South East | — |
| 20 | All Hallows Catholic School Period 202122 | 44.0 | Academy · Day · 6th | Farnham, South East | — |
| 21 | Brockhill Park Performing Arts College Period 202223 | 43.9 | Academy · Day · 6th | Hythe, South East | Good |
| 22 | Uckfield College Period 202122 | 43.9 | State · Day · 6th | Uckfield, South East | Outstanding |
| 23 | Gordon's School Period 202122 | 43.7 | Academy · Boarding · 6th | Woking, South East | — |
| 24 | Howard of Effingham School Period 202122 | 43.4 | Academy · Day · 6th | Leatherhead, South East | Good |
| 25 | UTC Reading Period 202425 | 43.3 | Free School · Day · 6th | Reading, South East | — |