| Wyburns Primary School145349 | Primary | Good | 19.8% | 187 |
| Writtle Junior School151222 | Primary | Good | 16.4% | 238 |
| Writtle Infant School151221 | Primary | Good | 10.7% | 178 |
| Writtle College Limited150975 | 16 plus | — | — | — |
| Woodville Primary School140447 | Primary | Good | 5.6% | 412 |
| Woodlands School Hutton Manor133628 | Not applicable | — | — | 143 |
| Woodlands School115420 | Not applicable | — | — | 57 |
| Woodlands School141214 | Secondary | Good | 29.8% | 1,513 |
| Woodham Walter Church of England Primary Academy151510 | Primary | Good | 29.3% | 75 |
| Woodham Ley Primary School141625 | Primary | Good | 9.5% | 243 |
| Woodend Farm School149597 | Not applicable | — | — | 25 |
| Woodcroft School115425 | Not applicable | — | — | 41 |
| Woodcroft Nursery School114699 | Nursery | Good | 0.0% | 96 |
| Wix and Wrabness Primary School114739 | Primary | Good | 17.1% | 117 |
| Witham Oaks Academy139871 | Primary | Good | 31.0% | 290 |
| Winter Gardens Academy142000 | Primary | Good | 36.7% | 411 |
| Wimbish Primary Academy150061 | Primary | Good | 24.4% | 41 |
| Willowbrook Primary School115041 | Primary | Good | 21.2% | 208 |
| Willow Brook Primary School and Nursery141195 | Primary | Good | 41.5% | 186 |
| William Read Primary Academy149253 | Primary | Good | 28.0% | 189 |
| William Martin Church of England Junior School145726 | Primary | Good | 36.8% | 234 |
| William Martin Church of England Infant and Nursery School145602 | Primary | Good | 18.2% | 185 |
| William de Ferrers School136605 | Secondary | Requires Improvement | 13.9% | 1,237 |
| Widford Lodge School115391 | Not applicable | — | — | 179 |
| Wickford Primary School114813 | Primary | Good | 21.2% | 472 |
| Whitmore Primary School and Nursery143126 | Primary | Good | 37.0% | 633 |
| White Notley Church of England Voluntary Controlled Primary School115111 | Primary | Good | 6.5% | 108 |
| White Hall Academy and Nursery138575 | Primary | Good | 49.1% | 670 |
| White Court School114988 | Primary | Good | 18.0% | 550 |
| White Bridge Primary School145603 | Primary | Good | 15.9% | 434 |
| Wethersfield CofE VC Primary School115110 | Primary | Good | 6.8% | 44 |
| Westwood Academy137030 | Primary | Outstanding | 7.3% | 247 |
| Westlands Community Primary School115027 | Primary | Good | 24.9% | 571 |
| West Horndon Primary School114921 | Primary | Good | 8.9% | 180 |
| West Hatch High School136758 | Secondary | Good | 13.7% | 1,573 |
| Wentworth Primary School114933 | Primary | Good | 15.1% | 437 |
| Wells Park School148708 | Not applicable | Outstanding | 60.7% | 61 |
| Weeley St Andrew's CofE Primary School140181 | Primary | Good | 36.3% | 179 |
| Waterman Primary School141715 | Primary | Requires Improvement | 60.9% | 67 |
| Water Lane Primary Academy141194 | Primary | Good | 32.3% | 198 |
| Warley Primary School115042 | Primary | Good | 11.7% | 426 |
| Walton on the Naze Primary School115300 | Primary | Good | 61.2% | 188 |
| Waltham Holy Cross Primary Academy147265 | Primary | Good | 27.5% | 598 |
| Vange Primary School and Nursery114811 | Primary | Good | 30.3% | 97 |
| Usp College130681 | 16 plus | — | — | — |
| Ursuline Preparatory School115428 | Not applicable | — | — | 161 |
| Upshire Primary Foundation School115310 | Primary | Requires Improvement | 31.8% | 198 |
| University of Essex133805 | Not applicable | — | — | — |
| Unity Primary Academy141113 | Primary | Good | 51.0% | 432 |
| Trinity St Mary's CofE Voluntary Aided Primary School, South Woodham Ferrers115200 | Primary | Good | 19.1% | 132 |