| Stourview Church of England Primary Academy151532 | Primary | Requires Improvement | 47.8% | 39 |
| Sunnymede Primary School114910 | Primary | Good | 13.4% | 389 |
| Tabor Academy139179 | Secondary | Requires Improvement | 25.3% | 989 |
| Takeley Primary School142049 | Primary | Good | 14.3% | 350 |
| Tanglewood Nursery School114698 | Nursery | Outstanding | 0.0% | 133 |
| Tany's Dell Primary School and Nursery144665 | Primary | Good | 31.1% | 437 |
| Teaseldown School135837 | Not applicable | — | — | 24 |
| Templars Academy142813 | Primary | Good | 26.7% | 412 |
| Tendring Primary School114738 | Primary | Good | 13.5% | 208 |
| Terling Church of England Voluntary Aided Primary School115166 | Primary | Good | 9.1% | 99 |
| Thaxted Primary School115288 | Primary | Good | 11.4% | 228 |
| The Alderton Infant School and Nursery145989 | Primary | Good | 18.6% | 207 |
| The Alderton Junior School145728 | Primary | Good | 28.0% | 225 |
| The Appleton School136579 | Secondary | Good | 18.4% | 1,597 |
| The Basildon Lower Academy135895 | Secondary | Requires Improvement | 52.6% | 892 |
| The Basildon Upper Academy135897 | Secondary | Good | 45.7% | 847 |
| The Beaulieu Park School145916 | All-through | Outstanding | 11.4% | 1,763 |
| The Belsteads School144378 | Not applicable | — | — | 52 |
| The Billericay School136861 | Secondary | Good | 18.1% | 1,729 |
| The Bishop William Ward Church of England Primary School115144 | Primary | Good | 17.2% | 203 |
| The Bishops' Church of England and Roman Catholic Primary School115204 | Primary | Good | 9.4% | 437 |
| The Boswells School137874 | Secondary | Good | 16.4% | 1,423 |
| The Bromfords School139181 | Secondary | Requires Improvement | 24.4% | 1,181 |
| The Cathedral Church of England Voluntary Aided Primary School, Chelmsford115289 | Primary | Expected standard | 7.3% | 314 |
| The Cornelius Vermuyden School152376 | Secondary | — | — | — |
| The Deanes143639 | Secondary | Good | 25.1% | 588 |
| The Downs Primary School and Nursery146157 | Primary | Good | 26.9% | 362 |
| The Edith Borthwick School115464 | Not applicable | Expected standard | 39.9% | 243 |
| The FitzWimarc School141841 | Secondary | Good | 13.0% | 1,770 |
| The Flitch Green Academy136441 | Primary | Good | 11.0% | 272 |
| The Gilberd School137926 | Secondary | Outstanding | 15.4% | 1,588 |
| The Greenwell Academy149745 | Not applicable | — | 26.3% | 19 |
| The Hawthorns School149335 | Not applicable | Expected standard | 23.2% | 69 |
| The James Hornsby School138865 | Secondary | Needs attention | 48.0% | 1,040 |
| The King Edmund School136868 | Secondary | Good | 36.2% | 1,318 |
| The King John School136577 | Secondary | Expected standard | 13.4% | 2,098 |
| The Mayflower Primary School114747 | Primary | Good | 44.7% | 356 |
| The Ongar Academy141947 | Secondary | Good | 27.4% | 467 |
| The Phoenix Primary School143128 | Primary | Good | 25.2% | 717 |
| The Ramsey Academy, Halstead139248 | Secondary | Requires Improvement | 25.2% | 702 |
| The Robert Drake Primary School137246 | Primary | Good | 14.7% | 313 |
| The Sandon School137240 | Secondary | Requires Improvement | 15.3% | 1,218 |
| The Sir Geoff Hurst Academy150846 | Not applicable | — | 71.2% | 66 |
| The Sixth Form College Colchester151134 | 16 plus | — | — | — |
| The St Aubyn Centre Education Department134260 | Not applicable | Outstanding | 0.0% | 6 |
| The Stanway School137927 | Secondary | Good | 16.2% | 1,396 |
| The Sweyne Park School139534 | Secondary | Good | 20.9% | 1,429 |
| The Thomas Lord Audley School137937 | Secondary | Good | 30.4% | 940 |
| The Tower School148422 | Not applicable | — | — | 60 |
| The Trinity School143701 | Secondary | Good | 16.3% | 780 |