| St Catherine's Catholic Primary School, Littlehampton151256 | Primary | Good | 19.0% | 216 |
| St Augustine's CofE Primary School126009 | Primary | Good | 13.4% | 97 |
| St Anthony's School126155 | Not applicable | Outstanding | 41.7% | 254 |
| St Andrew's CofE Primary School126030 | Primary | Good | 6.4% | 171 |
| St Andrew's CofE Primary School126047 | Primary | Good | 19.2% | 208 |
| St Andrew's CofE High School126094 | Secondary | Good | 24.5% | 780 |
| Springfield Infant School and Nursery125967 | Primary | Outstanding | 12.4% | 161 |
| Springboard Education135180 | Not applicable | — | — | 30 |
| Southway Primary School138413 | Primary | Good | 27.2% | 445 |
| Southway Junior School125941 | Primary | Good | 16.3% | 362 |
| Southwater Junior Academy136865 | Primary | Good | 8.8% | 445 |
| Southwater Infant Academy136866 | Primary | Good | 4.3% | 230 |
| Southgate Primary144599 | Primary | Good | 37.1% | 267 |
| Southbourne Junior School125878 | Primary | Good | 19.7% | 228 |
| Southbourne Infant School125875 | Primary | Good | 15.9% | 176 |
| South Bersted CofE Primary School125973 | Primary | Good | 17.9% | 207 |
| Sompting Village Primary School134896 | Primary | Good | 21.5% | 362 |
| Sompting Abbotts School126121 | Not applicable | — | — | 101 |
| Slinfold CofE Primary School and Pre School125995 | Primary | Good | 12.4% | 137 |
| Slindon College126119 | Not applicable | — | — | 103 |
| Slindon CofE Primary School125994 | Primary | Good | 19.1% | 89 |
| Singleton CofE Primary School125993 | Primary | Good | 18.8% | 69 |
| Sidlesham Primary School125853 | Primary | Requires Improvement | 21.6% | 139 |
| Shoreham College126112 | Not applicable | — | — | 331 |
| Shoreham Beach Primary School125885 | Primary | Good | 8.6% | 209 |
| Shoreham Academy135962 | Secondary | Outstanding | 17.1% | 1,759 |
| Shipley CofE Primary School125992 | Primary | Good | 9.1% | 66 |
| Shelley Primary School125820 | Primary | Requires Improvement | 10.9% | 412 |
| Sheddingdean Community Primary School125958 | Primary | Requires Improvement | 17.1% | 199 |
| Seymour Primary School138645 | Primary | Good | 31.2% | 455 |
| Serenity School Crawley149160 | Not applicable | — | — | 205 |
| Seaside Primary School143387 | Primary | Outstanding | 11.3% | 620 |
| Seal Primary Academy138071 | Primary | Good | 21.1% | 294 |
| Seaford College126110 | Not applicable | — | — | 970 |
| Seadown School135691 | Not applicable | — | — | 25 |
| Sackville School126089 | Secondary | Good | 14.1% | 1,525 |
| Rustington Community Primary School139478 | Primary | Good | 8.1% | 554 |
| Rusper Primary School150703 | Primary | Inadequate | 18.3% | 93 |
| Rumboldswhyke CofE Primary School148184 | Primary | Good | 25.2% | 127 |
| Rudgwick Primary School125849 | Primary | Good | 3.8% | 213 |
| Rose Green Junior School141600 | Primary | Outstanding | 12.7% | 385 |
| Rose Green Infant School125928 | Primary | Good | 10.5% | 269 |
| Rogate CofE Primary School125991 | Primary | Good | 16.4% | 73 |
| River Beach Primary School140089 | Primary | Good | 27.0% | 665 |
| Rikkyo School-in-England126132 | Not applicable | — | — | 177 |
| Red Balloon Worthing Learner Centre149217 | Not applicable | — | — | 25 |
| Rake CofE Primary School125989 | Primary | Good | 14.3% | 91 |
| Queen Elizabeth Ii Silver Jubilee School, Horsham126160 | Not applicable | Outstanding | 26.1% | 140 |
| Pound Hill Junior School, Crawley125905 | Primary | Good | 13.6% | 352 |
| Pound Hill Infant Academy142290 | Primary | Good | 10.8% | 269 |