| Rumboldswhyke CofE Primary School148184 | Primary | Good | 25.2% | 127 |
| Rusper Primary School150703 | Primary | Inadequate | 18.3% | 93 |
| Rustington Community Primary School139478 | Primary | Good | 8.1% | 554 |
| Sackville School126089 | Secondary | Good | 14.1% | 1,525 |
| Seadown School135691 | Not applicable | — | — | 25 |
| Seaford College126110 | Not applicable | — | — | 970 |
| Seal Primary Academy138071 | Primary | Good | 21.1% | 294 |
| Seaside Primary School143387 | Primary | Outstanding | 11.3% | 620 |
| Serenity School Crawley149160 | Not applicable | — | — | 205 |
| Seymour Primary School138645 | Primary | Good | 31.2% | 455 |
| Sheddingdean Community Primary School125958 | Primary | Requires Improvement | 17.1% | 199 |
| Shelley Primary School125820 | Primary | Requires Improvement | 10.9% | 412 |
| Shipley CofE Primary School125992 | Primary | Good | 9.1% | 66 |
| Shoreham Academy135962 | Secondary | Outstanding | 17.1% | 1,759 |
| Shoreham Beach Primary School125885 | Primary | Good | 8.6% | 209 |
| Shoreham College126112 | Not applicable | — | — | 331 |
| Sidlesham Primary School125853 | Primary | Requires Improvement | 21.6% | 139 |
| Singleton CofE Primary School125993 | Primary | Good | 18.8% | 69 |
| Slindon CofE Primary School125994 | Primary | Good | 19.1% | 89 |
| Slindon College126119 | Not applicable | — | — | 103 |
| Slinfold CofE Primary School and Pre School125995 | Primary | Good | 12.4% | 137 |
| Sompting Abbotts School126121 | Not applicable | — | — | 101 |
| Sompting Village Primary School134896 | Primary | Good | 21.5% | 362 |
| South Bersted CofE Primary School125973 | Primary | Good | 17.9% | 207 |
| Southbourne Infant School125875 | Primary | Good | 15.9% | 176 |
| Southbourne Junior School125878 | Primary | Good | 19.7% | 228 |
| Southgate Primary144599 | Primary | Good | 37.1% | 267 |
| Southwater Infant Academy136866 | Primary | Good | 4.3% | 230 |
| Southwater Junior Academy136865 | Primary | Good | 8.8% | 445 |
| Southway Junior School125941 | Primary | Good | 16.3% | 362 |
| Southway Primary School138413 | Primary | Good | 27.2% | 445 |
| Springboard Education135180 | Not applicable | — | — | 30 |
| Springfield Infant School and Nursery125967 | Primary | Outstanding | 12.4% | 161 |
| St Andrew's CofE High School126094 | Secondary | Good | 24.5% | 780 |
| St Andrew's CofE Primary School126030 | Primary | Good | 6.4% | 171 |
| St Andrew's CofE Primary School126047 | Primary | Good | 19.2% | 208 |
| St Anthony's School126155 | Not applicable | Outstanding | 41.7% | 254 |
| St Augustine's CofE Primary School126009 | Primary | Good | 13.4% | 97 |
| St Catherine's Catholic Primary School, Littlehampton151256 | Primary | Good | 19.0% | 216 |
| St Francis of Assisi Catholic Primary School, Crawley126046 | Primary | Good | 11.1% | 415 |
| St Giles CofE Primary School126057 | Primary | Good | 4.4% | 114 |
| St James' CofE Primary School, Coldwaltham125978 | Primary | Good | 9.1% | 44 |
| St John the Baptist CofE Primary School126027 | Primary | Good | 4.4% | 114 |
| St John's Catholic Primary School126039 | Primary | Good | 7.9% | 203 |
| St Joseph's Catholic Primary School147937 | Primary | Good | 4.4% | 434 |
| St Lawrence CofE Primary School139879 | Primary | Expected standard | 7.8% | 599 |
| St Margaret's Church of England Primary School151192 | Primary | Good | 19.1% | 423 |
| St Margaret's CofE Primary School126018 | Primary | Good | 12.0% | 408 |
| St Mary's Catholic Primary School151781 | Primary | Good | — | — |
| St Mary's Catholic Primary School144401 | Primary | Good | 11.5% | 253 |