| Portfield Primary Academy138402 | Primary | Good | 40.1% | 267 |
| Plaistow and Kirdford Primary School125848 | Primary | Requires Improvement | 6.5% | 200 |
| Philpots Manor School126141 | Not applicable | — | — | 54 |
| Petworth Cof E Primary School125990 | Primary | Good | 16.5% | 158 |
| Pennthorpe School126111 | Not applicable | — | — | 253 |
| Parklands Community Primary School125921 | Primary | Good | 21.2% | 430 |
| Palatine Primary School126159 | Not applicable | Good | 33.2% | 223 |
| Our Lady Queen of Heaven Catholic Primary School149294 | Primary | Good | 13.6% | 419 |
| Our Lady of Sion School126115 | Not applicable | — | — | 314 |
| Ormiston Six Villages Academy140199 | Secondary | Good | 20.2% | 698 |
| Oriel High School134042 | Secondary | Good | 13.9% | 1,478 |
| Orchards Junior School142381 | Primary | Good | 32.8% | 476 |
| Orchards Infant School150365 | Primary | Requires Improvement | 19.9% | 272 |
| Oathall Community College126085 | Secondary | Good | 14.2% | 1,303 |
| Oakwood School126104 | Not applicable | — | — | 308 |
| Oakfields Primary School, Horsham125836 | Primary | Good | 25.7% | 167 |
| Oak Tree Primary School150711 | Primary | Requires Improvement | 14.9% | 429 |
| Oak Grove College126161 | Not applicable | Good | 49.4% | 279 |
| Nyewood CofE Junior School126021 | Primary | Good | 20.3% | 291 |
| Nyewood CofE Infant School151588 | Primary | Good | — | — |
| Northlands Wood Primary Academy144453 | Primary | Good | 12.6% | 414 |
| Northgate Primary School133973 | Primary | Good | 22.3% | 650 |
| Northchapel Community Primary School125846 | Primary | Good | 14.8% | 54 |
| North Mundham Primary School125847 | Primary | Good | 11.3% | 204 |
| North Lancing Primary School125841 | Primary | Good | 4.8% | 400 |
| North Heath Community Primary School125949 | Primary | Good | 8.2% | 377 |
| New Barn School143400 | Not applicable | — | — | 90 |
| My Choice School Arundel135111 | Not applicable | — | — | 25 |
| Muntham House School126154 | Not applicable | Good | 37.4% | 124 |
| Milton Mount Primary School147936 | Primary | Good | 15.3% | 619 |
| Millais School126066 | Secondary | Good | 11.3% | 1,055 |
| Midhurst Rother College135760 | Secondary | Outstanding | 14.6% | 1,158 |
| Midhurst CofE Primary School125988 | Primary | Requires Improvement | 22.7% | 185 |
| Medmerry Primary School137370 | Primary | Good | 23.3% | 210 |
| Manor House School131139 | Not applicable | — | — | 68 |
| Manor Green Primary School126162 | Not applicable | Outstanding | 31.9% | 213 |
| Manor Green College126157 | Not applicable | Good | 39.1% | 210 |
| Maidenbower Junior School131603 | Primary | Good | 12.3% | 579 |
| Maidenbower Infant School and Nursery125962 | Primary | Good | 8.3% | 242 |
| Lyminster Primary School125927 | Primary | Good | 25.4% | 205 |
| Lvs Hassocks135930 | Not applicable | — | — | 88 |
| Loxwood Primary School125845 | Primary | Good | 14.9% | 181 |
| London Meed Community Primary School125931 | Primary | Good | 15.1% | 417 |
| Lodge Hill Residential Centre133143 | Not applicable | — | — | — |
| Littlegreen Academy146274 | Not applicable | Good | 57.5% | 80 |
| Lindfield Primary Academy142291 | Primary | Outstanding | 5.9% | 660 |
| Leechpool Primary School125918 | Primary | Requires Improvement | 10.1% | 417 |
| Lavant Primary School150158 | Primary | Good | 11.1% | 108 |
| Langley Green Primary133967 | Primary | Good | 25.8% | 475 |
| Lancing College Preparatory School at Worthing126114 | Not applicable | — | — | 219 |