| Doddinghurst Infant School114969 | Primary | Good | 10.1% | 158 |
| Doddinghurst Church of England Junior School146920 | Primary | Good | 15.5% | 220 |
| Dedham Church of England Voluntary Controlled Primary School115076 | Primary | Good | 9.8% | 194 |
| Debden Park High School136555 | Secondary | Good | 18.5% | 1,050 |
| Debden Church of England Voluntary Controlled Primary Academy143855 | Primary | Good | 9.7% | 145 |
| de Vere Primary School148139 | Primary | Good | 24.7% | 194 |
| De la Salle School115237 | Secondary | Good | 26.1% | 765 |
| Davenant Foundation School136625 | Secondary | Good | 9.1% | 1,239 |
| Danbury Park Community Primary School114992 | Primary | Good | 4.5% | 247 |
| Daiglen School115400 | Not applicable | — | — | 116 |
| Cressing Primary School148306 | Primary | Good | 20.4% | 196 |
| Crays Hill Primary School145772 | Primary | Good | 90.7% | 75 |
| Copford Church of England Voluntary Controlled Primary School115074 | Primary | Good | 4.4% | 206 |
| Coopersale Hall School115435 | Not applicable | — | — | 266 |
| Coopersale and Theydon Garnon Church of England Voluntary Controlled Primary School115095 | Primary | Good | 20.0% | 200 |
| Cooks Spinney Primary Academy and Nursery140024 | Primary | Good | 51.2% | 459 |
| Compass Community School Essex147473 | Not applicable | — | — | 16 |
| Community College Initiative Ltd144787 | Not applicable | — | — | — |
| Colne Engaine Church of England Primary School146923 | Primary | Good | 4.8% | 105 |
| Colne Community School146795 | Secondary | Good | 19.8% | 1,283 |
| Collingwood Primary School115305 | Primary | Good | 17.6% | 227 |
| Cold Norton Primary School114904 | Primary | Good | 7.0% | 157 |
| Colchester Royal Grammar School149899 | Secondary | Inadequate | 4.5% | 1,059 |
| Colchester Prep & High School115409 | Not applicable | — | — | 281 |
| Colchester Institute130674 | 16 plus | — | — | — |
| Colchester County High School for Girls137515 | Secondary | Outstanding | 2.7% | 1,210 |
| Colchester Academy136195 | Secondary | Good | 40.8% | 899 |
| Clavering Primary School114967 | Primary | Good | 6.0% | 182 |
| Clarity Independent School146804 | Not applicable | — | — | 13 |
| Clacton County High School138084 | Secondary | Good | 33.4% | 1,854 |
| Churchgate Church of England Voluntary Aided Primary School, Harlow115170 | Primary | Good | 23.7% | 194 |
| Church Langley Community Primary School131209 | Primary | Good | 7.8% | 436 |
| Christchurch Church of England Primary School142252 | Primary | Requires Improvement | 30.3% | 122 |
| Chrishall Holy Trinity and St Nicholas CofE (Aided) Primary School and Pre-School115195 | Primary | Good | 1.6% | 126 |
| Chipping Ongar Primary School146195 | Primary | Good | 11.7% | 205 |
| Chipping Hill Primary School114827 | Primary | Good | 9.8% | 419 |
| Children's Support Service136035 | Not applicable | Good | 40.7% | 91 |
| Chigwell School115392 | Not applicable | — | — | 1,111 |
| Chigwell Row Infant School145993 | Primary | Good | 34.2% | 38 |
| Chigwell Primary Academy141869 | Primary | Good | 10.2% | 186 |
| Cherry Tree Primary School143452 | Primary | Requires Improvement | 41.0% | 423 |
| Cherry Tree Academy142002 | Primary | Good | 31.6% | 171 |
| Chelmsford Hospital School142537 | Not applicable | — | — | 0 |
| Chelmsford County High School for Girls136412 | Secondary | Outstanding | 4.2% | 1,236 |
| Chelmsford College130679 | 16 plus | — | — | — |
| Chelmer Valley High School137260 | Secondary | Good | 18.7% | 1,155 |
| Chatten Free School148543 | Not applicable | Outstanding | 25.0% | 75 |
| Chase Lane Primary School and Nursery115301 | Primary | Good | 28.5% | 449 |
| Chappel CofE Controlled Primary School150123 | Primary | Inadequate | 4.5% | 89 |
| Chapel Hill Primary School & Nursery150736 | Primary | — | 5.3% | 206 |