| 1 | King Edward VI Grammar School, Chelmsford Period 202425 | 8.24 | Grammar · Day · 6th | Chelmsford, East of England | Outstanding |
| 2 | Chelmsford County High School for Girls Period 202425 | 7.94 | Grammar · Day · 6th | Chelmsford, East of England | Outstanding |
| 3 | Colchester Royal Grammar School Period 202425 | 7.85 | Grammar · Boarding · 6th | Colchester, East of England | Inadequate |
| 4 | Colchester County High School for Girls Period 202425 | 7.82 | Grammar · Day · 6th | Colchester, East of England | Outstanding |
| 5 | Westcliff High School for Boys Academy Period 202425 | 7.53 | Grammar · Day · 6th | Westcliff-on-Sea, East of England | Outstanding |
| 6 | Westcliff High School for Girls Period 202425 | 7.28 | Grammar · Day · 6th | Westcliff-on-Sea, East of England | Outstanding |
| 7 | Southend High School for Girls Period 202425 | 7.09 | Grammar · Day · 6th | Southend-on-Sea, East of England | Outstanding |
| 8 | Dame Alice Owen's School Period 202425 | 6.96 | Academy · Day · 6th | Potters Bar, East of England | Outstanding |
| 9 | Watford Grammar School for Boys Period 202425 | 6.80 | Academy · Day · 6th | Watford, East of England | Outstanding |
| 10 | Southend High School for Boys Period 202425 | 6.61 | Grammar · Day · 6th | Southend-on-Sea, East of England | Outstanding |
| 11 | Parmiter's School Period 202425 | 6.39 | Academy · Day · 6th | Watford, East of England | Outstanding |
| 12 | Watford Grammar School for Girls Period 202425 | 6.38 | Academy · Day · 6th | Watford, East of England | Outstanding |
| 13 | Chesterton Community College Period 202425 | 6.35 | Academy · Day · 6th | Cambridge, East of England | — |
| 14 | Parkside Community College Period 202425 | 6.34 | Academy · Day | Cambridge, East of England | — |
| 15 | Hockerill Anglo-European College Period 202425 | 6.10 | Academy · Boarding · 6th | Bishop's Stortford, East of England | Good |
| 16 | St Clement Danes School Period 202425 | 6.07 | Academy · Day · 6th | Rickmansworth, East of England | Outstanding |
| 17 | Beaumont School Period 202425 | 6.05 | Academy · Day · 6th | St Albans, East of England | — |
| 18 | Sandringham School Period 202425 | 5.99 | Academy · Day · 6th | St Albans, East of England | Outstanding |
| 19 | Notre Dame High School, Norwich Period 202425 | 5.89 | Academy · Day · 6th | Norwich, East of England | Good |
| 20 | The Bishop's Stortford High School Period 202425 | 5.89 | State · Day · 6th | Bishop's Stortford, East of England | — |
| 21 | St Bede's Inter-Church School Period 202425 | 5.86 | Academy · Day | Cambridge, East of England | Outstanding |
| 22 | The Hertfordshire & Essex High School and Science College Period 202425 | 5.83 | Academy · Day · 6th | Bishop's Stortford, East of England | Outstanding |
| 23 | Rickmansworth School Period 202425 | 5.76 | Academy · Day · 6th | Rickmansworth, East of England | Outstanding |
| 24 | Sir John Lawes School Period 202425 | 5.74 | Academy · Day · 6th | Harpenden, East of England | Outstanding |
| 25 | Impington Village College Period 202425 | 5.69 | Academy · Day · 6th | Cambridge, East of England | — |