| Portfield Primary Academy138402 | Primary | Needs attention | 39.6% | 288 |
| Plaistow and Kirdford Primary School125848 | Primary | Requires Improvement | 6.2% | 195 |
| Philpots Manor School126141 | Not applicable | — | — | 61 |
| Petworth Cof E Primary School125990 | Primary | Good | 23.8% | 164 |
| Pennthorpe School126111 | Not applicable | — | — | 172 |
| Parklands Community Primary School125921 | Primary | Good | 21.8% | 426 |
| Palatine Primary School126159 | Not applicable | Good | 33.3% | 222 |
| Our Lady Queen of Heaven Catholic Primary School149294 | Primary | Strong standard | 10.7% | 422 |
| Our Lady of Sion School126115 | Not applicable | — | — | 244 |
| Ormiston Six Villages Academy140199 | Secondary | Good | 24.1% | 731 |
| Oriel High School134042 | Secondary | Good | 15.2% | 1,441 |
| Orchards Junior School142381 | Primary | Good | 29.6% | 496 |
| Orchards Infant School150365 | Primary | Requires Improvement | 17.4% | 281 |
| Oathall Community College126085 | Secondary | Good | 14.5% | 1,341 |
| Oakwood School126104 | Not applicable | — | — | 308 |
| Oakfields Primary School, Horsham125836 | Primary | Good | 23.9% | 222 |
| Oak Tree Primary School150711 | Primary | Requires Improvement | 18.4% | 408 |
| Oak Grove College126161 | Not applicable | Good | 49.4% | 274 |
| Nyewood CofE Junior School126021 | Primary | Good | 23.4% | 291 |
| Nyewood CofE Infant School151588 | Primary | Good | 13.3% | 181 |
| Northlands Wood Primary Academy144453 | Primary | Good | 11.5% | 419 |
| Northgate Primary School133973 | Primary | Good | 23.7% | 649 |
| Northchapel Community Primary School125846 | Primary | Good | 17.0% | 53 |
| North Mundham Primary School125847 | Primary | Good | 10.7% | 206 |
| North Lancing Primary School125841 | Primary | Good | 5.7% | 407 |
| North Heath Community Primary School125949 | Primary | Good | 7.8% | 373 |
| New Barn School143400 | Not applicable | — | — | 103 |
| My Choice School Arundel135111 | Not applicable | — | — | 25 |
| Muntham House School126154 | Not applicable | Good | 30.3% | 142 |
| Milton Mount Primary School147936 | Primary | Good | 13.8% | 618 |
| Millais School126066 | Secondary | Good | 12.6% | 896 |
| Midhurst Rother College135760 | Secondary | Outstanding | 14.1% | 1,144 |
| Midhurst CofE Primary School125988 | Primary | Requires Improvement | 21.9% | 183 |
| Medmerry Primary School137370 | Primary | Good | 20.9% | 211 |
| Manor House School131139 | Not applicable | — | — | 72 |
| Manor Green Primary School126162 | Not applicable | Outstanding | 31.3% | 208 |
| Manor Green College126157 | Not applicable | Good | 36.3% | 210 |
| Maidenbower Junior School131603 | Primary | Good | 12.9% | 559 |
| Maidenbower Infant School and Nursery125962 | Primary | Good | 8.4% | 249 |
| Lyminster Primary School125927 | Primary | Good | 23.4% | 205 |
| Lvs Hassocks135930 | Not applicable | — | — | 99 |
| Loxwood Primary School125845 | Primary | Good | 15.2% | 178 |
| London Meed Community Primary School125931 | Primary | Good | 14.2% | 415 |
| Lodge Hill Residential Centre133143 | Not applicable | — | — | — |
| Littlegreen Academy146274 | Not applicable | Good | 61.7% | 81 |
| Lindfield Primary Academy142291 | Primary | Outstanding | 4.7% | 656 |
| Leechpool Primary School125918 | Primary | Requires Improvement | 9.3% | 409 |
| Lavant Primary School150158 | Primary | Good | 9.9% | 111 |
| Langley Green Primary133967 | Primary | Good | 23.6% | 472 |
| Lancing College Preparatory School at Worthing126114 | Not applicable | — | — | 202 |