Below you can find the ranking of London secondary schools that offer the IB Diploma based on their summer 2023 results. The highly selective British schools come out on top, as always, which is not too surprising given their selection process.
But several state schools have managed to achieve equally strong results, along with a variety of international schools. The global IB point average was 32.0, so almost all London schools compare favourably. It helps that they have a much higher share of native English speakers than other international schools around the world. Congratulations to the Ashcroft Technology Academy in Putney which is the highest performing state school with an IB Diploma average of 38.0 points!
| Rank | School | IB Score |
| 1 | North London Collegiate School | 41.3 |
| 2 | King’s College School, Wimbledon | 41.1 |
| 3 | Godolphin & Latymer School | 40.7 |
| 4 | Whitgift School | 39.0 |
| 5 | Ashcroft Technology Academy (state) | 38.0 |
| 6 | Marymount International School | 36.0 |
| 7 | Southbank International School | 35.1 |
| 8 | Westminster Academy (state) | 35.0 |
| 9 | Dwight School North London | 35.0 |
| 10 | Bexley Grammar School, Bexley (state) | 34.0 |
| 11 | Halcyon School, Marble Arch | 34.0 |
| 12 | ICS London | 32.0 |