| 1 | Guildford High School Period 202122 | 55.4 | Independent · Day · 6th | Guildford, South East | — |
| 2 | Wycombe Abbey Period 202122 | 55.3 | Independent · Boarding · 6th | High Wycombe, South East | — |
| 3 | Oxford High School GDST Period 202122 | 51.4 | Independent · Day · 6th | Oxford, South East | — |
| 4 | St Mary's School Ascot Period 202122 | 51.4 | Independent · Boarding · 6th | Ascot, South East | — |
| 5 | St Catherine's School Period 202122 | 51.3 | Independent · Boarding · 6th | Guildford, South East | — |
| 6 | St Helen and St Katharine Period 202122 | 51.2 | Independent · Day · 6th | Abingdon, South East | — |
| 7 | St Swithuns Period 202122 | 50.7 | Independent · Boarding · 6th | Unknown, South East | — |
| 8 | The Abbey School Reading Period 202122 | 50.4 | Independent · Day · 6th | Reading, South East | — |
| 9 | Downe House Period 202122 | 50.1 | Independent · Boarding · 6th | Thatcham, South East | — |
| 10 | Notre Dame School Period 202122 | 49.6 | Independent · Day · 6th | Unknown, South East | — |
| 11 | Headington Rye Oxford Period 202122 | 49.6 | Independent · Boarding · 6th | Oxford, South East | — |
| 12 | Benenden School Period 202324 | 49.2 | Independent · Boarding · 6th | Cranbrook, South East | — |
| 13 | Burgess Hill Girls Period 202324 | 49.1 | Independent · Boarding · 6th | Burgess Hill, South East | — |
| 14 | Sir William Perkins's School Period 202122 | 48.5 | Independent · Day · 6th | Unknown, South East | — |
| 15 | Farnborough Hill Period 202122 | 48.5 | Independent · Day · 6th | Farnborough, South East | — |
| 16 | Walthamstow Hall Period 202324 | 48.1 | Independent · Day · 6th | Sevenoaks, South East | — |
| 17 | Prior's Field School Period 202122 | 48.0 | Independent · Boarding · 6th | Godalming, South East | — |
| 18 | Roedean School Period 202122 | 48.0 | Independent · Boarding · 6th | Brighton, South East | — |
| 19 | Tormead School Period 202122 | 46.8 | Independent · Day · 6th | Guildford, South East | — |
| 20 | Pipers Corner School Period 202122 | 46.8 | Independent · Day · 6th | High Wycombe, South East | — |
| 21 | St Teresa's School Period 202122 | 46.7 | Independent · Boarding · 6th | Dorking, South East | — |
| 22 | Woldingham School Period 202122 | 45.5 | Independent · Boarding · 6th | Caterham, South East | — |
| 23 | The Marist School Period 202324 | 45.1 | Independent · Day · 6th | Ascot, South East | — |
| 24 | Brighton Girls GDST Period 202122 | 44.7 | Independent · Day · 6th | Unknown, South East | — |
| 25 | Kent College Pembury Period 202122 | 44.0 | Independent · Boarding · 6th | Tunbridge Wells, South East | — |