| 51 | St Edward's School | 813 pupils | Independent · Boarding · 6th | Oxford, South East | — |
| 52 | Pangbourne College | 406 pupils | Independent · Boarding · 6th | Reading, South East | — ISI · Good |
| 53 | Ardingly College | 1,048 pupils | Independent · Boarding · 6th | Haywards Heath, South East | — ISI · Good |
| 54 | Christ's Hospital | 846 pupils | Independent · Boarding · 6th | Horsham, South East | — |
| 55 | Leighton Park School | 565 pupils | Independent · Boarding · 6th | Reading, South East | — ISI · Good |
| 56 | Walthamstow Hall | 473 pupils | Independent · Day · 6th | Sevenoaks, South East | — ISI · Good |
| 57 | Sutton Valence School | 866 pupils | Independent · Boarding · 6th | Maidstone, South East | — |
| 58 | Tormead School | 771 pupils | Independent · Day · 6th | Guildford, South East | — ISI · Good |
| 59 | St George's College Weybridge | 1,023 pupils | Independent · Day · 6th | Addlestone, South East | — |
| 60 | Cranleigh School | 961 pupils | Independent · Boarding · 6th | Cranleigh, South East | — |
| 61 | King Edward VI School | 992 pupils | Independent · Day · 6th | Southampton, South East | — ISI · Good |
| 62 | Kingham Hill School | 326 pupils | Independent · Boarding · 6th | Chipping Norton, South East | — ISI · Good |
| 63 | Oxford International College | Inadequate | Independent · Boarding · 6th | Unknown, South East | Inadequate |
| 64 | Farnborough Hill | 502 pupils | Independent · Day · 6th | Farnborough, South East | — ISI · Good |
| 65 | Thornton College | 358 pupils | Independent · Boarding · 6th | Milton Keynes, South East | — ISI · Good |
| 66 | Sir William Perkins's School | 528 pupils | Independent · Day · 6th | Unknown, South East | — |
| 67 | The Marist School | 447 pupils | Independent · Day · 6th | Ascot, South East | — ISI · Good |
| 68 | Lewes Old Grammar School | 694 pupils | Independent · Day · 6th | Unknown, South East | — ISI · Good |
| 69 | d'Overbroeck's | 692 pupils | Independent · Boarding · 6th | Oxford, South East | — |
| 70 | St Hugh's School | 327 pupils | Independent · Boarding | Oxfordshire, South East | — |
| 71 | Reddam House Berkshire | 800 pupils | Independent · Boarding · 6th | Wokingham, South East | — |
| 72 | Battle Abbey School | 472 pupils | Independent · Boarding · 6th | East Sussex, South East | — ISI · Good |
| 73 | Lingfield College | 951 pupils | Independent · Day · 6th | Lingfield, South East | — ISI · Good |
| 74 | St Edmunds school Trust Ltd | 626 pupils | Independent · Day | Unknown, South East | — |
| 75 | Kent College Pembury | 418 pupils | Independent · Boarding · 6th | Tunbridge Wells, South East | — ISI · Excellent |