| Capel St Mary Church of England Voluntary Controlled Primary School124749 | Primary | Good | 12.8% | 276 |
| Carlton Colville Primary School152283 | Primary | Good | — | — |
| Castle East School148541 | Not applicable | Outstanding | 41.7% | 120 |
| Castle Hill Infant School141372 | Primary | Good | 23.6% | 220 |
| Castle Hill Junior School141373 | Primary | Good | 37.4% | 286 |
| Castle Manor Academy138162 | Secondary | Good | 29.3% | 757 |
| Cavendish Church of England Primary School151639 | Primary | Inadequate | — | — |
| Cedars Park Community Primary School143360 | Primary | Good | 14.8% | 386 |
| Cedarwood Primary School131962 | Primary | Good | 9.2% | 413 |
| Centre Academy East Anglia124890 | Not applicable | — | — | 83 |
| Chalk Hill152298 | Not applicable | Requires Improvement | — | 9 |
| Chantry Academy138373 | Secondary | Good | 37.3% | 984 |
| Charsfield Church of England Primary School146148 | Primary | Good | 21.6% | 37 |
| Chelmondiston Church of England Primary School144625 | Primary | Good | 21.0% | 124 |
| Chilton Community Primary School147932 | Primary | Good | 43.4% | 152 |
| Churchill Special Free School139732 | Not applicable | Outstanding | 22.1% | 71 |
| Clare Community Primary School144399 | Primary | Good | 17.4% | 201 |
| Claydon High School144214 | Secondary | Good | 19.6% | 771 |
| Claydon Primary School146021 | Primary | Good | 17.0% | 503 |
| Clements Primary Academy144276 | Primary | Good | 35.1% | 262 |
| Cliff Lane Primary School141591 | Primary | Good | 16.0% | 454 |
| Clifford Road Primary School & Nursery124654 | Primary | Requires Improvement | 18.8% | 428 |
| Cockfield Church of England Primary School150065 | Primary | Good | 27.8% | 72 |
| Coldfair Green Community Primary School146875 | Primary | Good | 14.2% | 148 |
| Colneis Junior School152285 | Primary | Good | — | — |
| Combs Ford Primary School147880 | Primary | Requires Improvement | 23.1% | 337 |
| Compass Community School Aylward Park148808 | Not applicable | — | — | 9 |
| Copdock Primary School124577 | Primary | Outstanding | 9.6% | 83 |
| Copleston High School136827 | Secondary | Good | 18.1% | 1,937 |
| Corton Church of England Voluntary Aided Primary School124727 | Primary | Good | 23.0% | 120 |
| Coupals Primary Academy141371 | Primary | Good | 22.3% | 287 |
| Crawford's Church of England Primary School146175 | Primary | Good | 36.3% | 91 |
| Creeting St Mary Church of England Primary School152011 | Primary | Good | — | — |
| Culford School124886 | Not applicable | — | — | 895 |
| Dale Hall Community Primary School150424 | Primary | Good | 9.2% | 414 |
| Debenham High School136416 | Secondary | Good | 13.0% | 699 |
| Dell Primary School141736 | Primary | Good | 34.1% | 323 |
| Dennington Church of England Primary School146234 | Primary | Good | 27.8% | 72 |
| Earl Soham Community Primary School124578 | Primary | Good | 16.9% | 77 |
| East Bergholt Church of England Voluntary Controlled Primary School124729 | Primary | Good | 10.0% | 200 |
| East Bergholt High School137218 | Secondary | Good | 15.5% | 894 |
| East Coast College130819 | 16 plus | — | — | — |
| East Point Academy137134 | Secondary | Good | 42.6% | 826 |
| Easton Primary School141550 | Primary | Good | 23.0% | 74 |
| Edgar Sewter Community Primary School144444 | Primary | Good | 32.8% | 302 |
| Elm Tree Primary School142580 | Primary | Good | 29.5% | 271 |
| Elmsett Church of England Primary School148751 | Primary | Good | 28.1% | 57 |
| Elmswell Community Primary School124534 | Primary | Good | 17.9% | 363 |
| Elveden Church of England Primary Academy139149 | Primary | Outstanding | 11.9% | 101 |
| Exning Primary School151104 | Primary | Outstanding | 18.3% | 229 |