| 26 | Upton Court Grammar School Period 202122 | 45.7 | Grammar · Day · 6th | Slough, South East | Outstanding |
| 27 | Invicta Grammar School Period 202425 | 45.6 | Grammar · Day · 6th | Maidstone, South East | Outstanding |
| 28 | The Burgate School and Sixth Form Period 202122 | 45.5 | Academy · Day · 6th | Fordingbridge, South East | — |
| 29 | John Hampden Grammar School Period 202425 | 45.5 | Grammar · Day · 6th | High Wycombe, South East | Outstanding |
| 30 | Edgbarrow School Period 202122 | 45.0 | Academy · Day · 6th | Crowthorne, South East | Outstanding |
| 31 | Leigh Academy Mascalls Period 202324 | 45.0 | Academy · Day · 6th | Tonbridge, South East | — |
| 32 | The Cherwell School Period 202122 | 45.0 | Academy · Day · 6th | Oxford, South East | Outstanding |
| 33 | Holyport College Period 202122 | 44.9 | Free School · Boarding · 6th | Holyport, South East | Good |
| 34 | Bennett Memorial Diocesan School Period 202122 | 44.7 | Academy · Day · 6th | Tunbridge Wells, South East | Outstanding |
| 35 | Yateley School Period 202223 | 44.4 | State · Day · 6th | Yateley, South East | — |
| 36 | Brighton Aldridge Community Academy Period 202122 | 44.1 | Academy · Day · 6th | Brighton, South East | — |
| 37 | All Hallows Catholic School Period 202122 | 44.0 | Academy · Day · 6th | Farnham, South East | — |
| 38 | Highworth Grammar School Period 202122 | 44.0 | Grammar · Day · 6th | Ashford, South East | — |
| 39 | Weald of Kent Grammar School Period 202122 | 43.9 | Grammar · Day · 6th | Tonbridge, South East | — |
| 40 | Brockhill Park Performing Arts College Period 202223 | 43.9 | Academy · Day · 6th | Hythe, South East | Good |
| 41 | Uckfield College Period 202122 | 43.9 | State · Day · 6th | Uckfield, South East | Outstanding |
| 42 | Gordon's School Period 202122 | 43.7 | Academy · Boarding · 6th | Woking, South East | — |
| 43 | Dartford Grammar School for Girls Period 202122 | 43.5 | Grammar · Day · 6th | Dartford, South East | — |
| 44 | Fort Pitt Grammar School Period 202122 | 43.4 | Grammar · Day · 6th | Chatham, South East | Outstanding |
| 45 | Didcot Girls' School Period 202122 | 43.4 | Academy · Day · 6th | Didcot, South East | — |
| 46 | Wilmington Grammar School for Girls Period 202425 | 43.4 | Grammar · Day · 6th | Dartford, South East | Good |
| 47 | Howard of Effingham School Period 202122 | 43.4 | Academy · Day · 6th | Leatherhead, South East | Good |
| 48 | Shoreham Academy Period 202425 | 43.3 | Academy · Day · 6th | Shoreham-by-Sea, South East | Outstanding |
| 49 | UTC Reading Period 202425 | 43.3 | Free School · Day · 6th | Reading, South East | — |
| 50 | Tunbridge Wells Grammar School for Boys Period 202122 | 43.3 | Grammar · Day · 6th | Tunbridge Wells, South East | — |