| 1 | Chelmsford County High School for Girls | 71.5 compositeOfsted18.0 AAB%10.1 VA9.4 Att816.1 EM5+17.9 | Grammar · Day · 6th | Chelmsford, East of England | Outstanding 2024-01-23 |
| 2 | Colchester County High School for Girls | 69.3 compositeOfsted18.0 AAB%7.9 VA9.2 Att816.1 EM5+18.0 | Grammar · Day · 6th | Colchester, East of England | Outstanding 2023-11-28 |
| 3 | Southend High School for Girls | 63.3 compositeOfsted18.0 AAB%3.2 VA9.3 Att815.0 EM5+17.8 | Grammar · Day · 6th | Southend-on-Sea, East of England | Outstanding 2024-07-02 |
| 4 | Westcliff High School for Girls | 63.2 compositeOfsted18.0 AAB%4.5 VA8.1 Att815.1 EM5+17.5 | Grammar · Day · 6th | Westcliff-on-Sea, East of England | Outstanding 2024-02-06 |
| 5 | Watford Grammar School for Girls | 60.5 compositeOfsted18.0 AAB%5.0 VA8.8 Att813.6 EM5+15.0 | Academy · Day · 6th | Watford, East of England | Outstanding 2024-03-05 |
| 6 | The Hertfordshire & Essex High School and Science College | 59.6 compositeOfsted18.0 AAB%4.1 VA11.2 Att812.7 EM5+13.6 | Academy · Day · 6th | Bishop's Stortford, East of England | Outstanding 2023-11-14 |
| 7 | Presdales School | 55.4 compositeOfsted18.0 AAB%2.0 VA11.1 Att811.8 EM5+12.5 | Academy · Day · 6th | Ware, East of England | Outstanding 2024-03-06 |
| 8 | Brentwood Ursuline Convent High School | 51.0 compositeOfsted11.5 AAB%2.5 VA10.8 Att812.2 EM5+14.0 | Academy · Day · 6th | Brentwood, East of England | Good 2023-03-07×0.85 |
| 9 | Hitchin Girls' School | 45.2 compositeAAB%2.9 VA14.6 Att813.3 EM5+14.3 | Academy · Day · 6th | Hitchin, East of England | — 2024-10-08 |
| 10 | St Albans Girls' School | 44.4 compositeAAB%4.0 VA12.4 Att813.6 EM5+14.5 | Academy · Day · 6th | St Albans, East of England | — 2024-11-26 |
| 11 | Loreto College | 42.9 compositeAAB%4.5 VA12.7 Att813.4 EM5+12.2 | Academy · Day · 6th | St Albans, East of England | — 2024-10-15 |
| 12 | Challney High School for Girls | 42.7 compositeOfsted17.3 Att813.7 EM5+11.7 | Academy · Day | Luton, East of England | Outstanding 2020-01-14×0.7 |
| 13 | St Bernard's High School | 39.3 compositeAAB%0.8 VA13.5 Att812.7 EM5+12.3 | Academy · Day · 6th | Westcliff-on-Sea, East of England | — 2023-03-22 |
| 14 | Grays Convent High School | 38.2 composite | State · Day | Grays, East of England | — 2023-05-11 |
| 15 | Bishop's Hatfield Girls' School | 38.0 compositeAAB%3.7 VA11.0 Att812.0 EM5+11.4 | Academy · Day · 6th | Hatfield, East of England | — 2022-12-07 |