| Shotley Community Primary School146271 | Primary | Good | 25.0% | 96 |
| Sidegate Primary School140822 | Primary | Good | 16.7% | 652 |
| Sir Bobby Robson School147849 | Not applicable | Good | 59.1% | 66 |
| Sir John Leman High School137055 | Secondary | Good | 22.7% | 1,439 |
| Sir Peter Hall School149108 | Not applicable | Good | 62.5% | 56 |
| Sir Robert Hitcham Church of England Voluntary Aided School124774 | Primary | Good | 15.0% | 170 |
| Snape Primary School148824 | Primary | Good | 10.5% | 76 |
| Somerleyton Primary School145694 | Primary | Good | 6.6% | 61 |
| Somersham Primary School124609 | Primary | Good | 13.6% | 81 |
| South Lee School124876 | Not applicable | — | — | 189 |
| Southwold Primary School144826 | Primary | Good | 51.0% | 74 |
| Springfield Infant School and Nursery144213 | Primary | Good | 18.8% | 296 |
| Springfield Junior School144329 | Primary | Good | 32.7% | 336 |
| Sprites Primary Academy141985 | Primary | Good | 29.7% | 403 |
| Sproughton Church of England Primary School142595 | Primary | Good | 11.9% | 101 |
| St Alban's Catholic High School137849 | Secondary | Good | 20.9% | 996 |
| St Benedict's Catholic School149285 | Secondary | Good | 12.4% | 976 |
| St Benet's Catholic Primary School142786 | Primary | Good | 32.9% | 73 |
| St Botolph's Church of England Voluntary Controlled Primary School124758 | Primary | Good | 14.9% | 181 |
| St Christopher's Academy143490 | Not applicable | Good | 0.0% | 0 |
| St Christopher's Cevcp School142025 | Primary | Good | 17.6% | 340 |
| St Edmund's Catholic Primary School124764 | Primary | Good | 12.9% | 442 |
| St Edmund's Catholic Primary School142770 | Primary | Good | 38.2% | 68 |
| St Edmund's Primary School143074 | Primary | Good | 25.0% | 72 |
| St Edmundsbury CofE Primary Academy151165 | Primary | Requires Improvement | 27.0% | 174 |
| St Felix Roman Catholic Primary School, Haverhill143624 | Primary | Good | 11.7% | 217 |
| St Gregory Church of England Voluntary Controlled Primary School124757 | Primary | Good | 25.2% | 237 |
| St Helen's Primary School141819 | Primary | Good | 29.1% | 451 |
| St John's Church of England Voluntary Aided Primary School, Ipswich124781 | Primary | Good | 1.4% | 210 |
| St Joseph's College124883 | Not applicable | — | — | 577 |
| St Joseph's Roman Catholic Primary School124763 | Primary | Good | 16.6% | 157 |
| St Louis Catholic Academy139448 | Primary | Good | 15.4% | 295 |
| St Margaret's Church of England Voluntary Aided Primary School, Ipswich124782 | Primary | Good | 23.9% | 414 |
| St Margaret's Primary Academy141984 | Primary | Good | 49.9% | 389 |
| St Mark's Catholic Primary School151852 | Primary | Good | — | — |
| St Mary's Catholic Primary School, Ipswich145382 | Primary | Outstanding | 11.8% | 212 |
| St Mary's Church of England Academy137419 | Primary | Requires Improvement | 20.0% | 405 |
| St Mary's Church of England Primary School, Hadleigh142597 | Primary | Good | 23.9% | 142 |
| St Mary's Church of England Primary School, Woodbridge142598 | Primary | Good | 8.2% | 196 |
| St Mary's Roman Catholic Primary School142806 | Primary | Good | 15.4% | 175 |
| St Matthew's Church of England Primary School, Ipswich146229 | Primary | Good | 36.1% | 404 |
| St Pancras Catholic Primary School146977 | Primary | Good | 24.4% | 172 |
| St Peter and St Paul Church of England Primary School, Eye145692 | Primary | Good | 22.2% | 190 |
| Stanton Primary School152030 | Primary | Good | — | — |
| Stoke College124865 | Not applicable | — | — | 104 |
| Stoke High School - Ormiston Academy140032 | Secondary | Good | 40.0% | 790 |
| Stoke-by-Nayland Church of England Primary School144553 | Primary | Good | 57.6% | 40 |
| Stone Lodge Academy141407 | Not applicable | Inadequate | 46.8% | 173 |
| Stonham Aspal Church of England Voluntary Aided Primary School124772 | Primary | Good | 8.4% | 166 |
| Stour Valley Community School136757 | Secondary | Good | 16.9% | 569 |