| Yorke Mead Primary School117130 | Primary | Outstanding | 9.5% | 434 |
| York Road Nursery School117071 | Nursery | Outstanding | 0.0% | 106 |
| York House School117636 | Not applicable | — | — | 360 |
| Yewtree Primary School135222 | Primary | Good | 41.1% | 347 |
| Yavneh Primary School142862 | Primary | Outstanding | 1.2% | 419 |
| Yavneh College136922 | Secondary | Good | 5.4% | 1,042 |
| Wymondley Junior Mixed and Infant School117177 | Primary | Good | 23.8% | 101 |
| Wormley CofE Primary School117400 | Primary | Good | 28.2% | 441 |
| Woolgrove School, Special Needs Academy137997 | Not applicable | Good | 38.1% | 126 |
| Woolenwick Junior School117322 | Primary | Good | 22.5% | 236 |
| Woolenwick Infant and Nursery School117323 | Primary | Outstanding | 19.8% | 214 |
| Woodside Primary School147879 | Primary | Good | 13.2% | 229 |
| Woodlands Primary School117181 | Primary | Good | 34.1% | 228 |
| Woodhall Primary School117194 | Primary | Good | 40.4% | 95 |
| Woodfield School117682 | Not applicable | Good | 34.3% | 125 |
| Wood End School117358 | Primary | Outstanding | 1.8% | 460 |
| Windhill21141851 | Primary | Outstanding | 11.6% | 456 |
| Windermere Primary School117217 | Primary | Requires Improvement | 34.8% | 158 |
| Wilshere-Dacre Junior Academy140611 | Primary | Good | 13.7% | 263 |
| Willow Tree Primary School151528 | Primary | Requires Improvement | — | — |
| William Ransom Primary School117314 | Primary | Requires Improvement | 2.6% | 422 |
| Wilbury Junior School144903 | Primary | Good | 35.7% | 241 |
| Widford School117176 | Primary | Good | 19.6% | 47 |
| Whitehill Junior School117253 | Primary | Good | 10.4% | 241 |
| White Trees Independent School140655 | Not applicable | — | — | 71 |
| Wheatfields Junior Mixed School146878 | Primary | Good | 4.4% | 360 |
| Wheatfields Infants' and Nursery School146893 | Primary | Good | 3.4% | 282 |
| Wheatcroft Primary School117328 | Primary | Good | 14.5% | 300 |
| Weston Way Nursery School117065 | Nursery | Outstanding | 0.0% | 71 |
| Weston Primary & Nursery School117413 | Primary | Good | 18.4% | 109 |
| Westfield Primary School117254 | Primary | Requires Improvement | 28.5% | 155 |
| Westfield Academy140049 | Secondary | Good | 26.3% | 1,335 |
| Westbrook Hay117610 | Not applicable | — | — | 386 |
| West Herts College130720 | 16 plus | — | — | — |
| Welwyn St Mary's Church of England Voluntary Aided Primary School117490 | Primary | Good | 7.7% | 415 |
| Watton-at-Stone Primary and Nursery School117171 | Primary | Good | 7.4% | 219 |
| Watling View School117683 | Not applicable | Good | 34.3% | 111 |
| Watford St John's Church of England Primary School142221 | Primary | Requires Improvement | 12.0% | 410 |
| Watford Grammar School for Girls136289 | Secondary | Outstanding | 6.5% | 1,429 |
| Watford Grammar School for Boys136276 | Secondary | Outstanding | 6.2% | 1,610 |
| Watford Field School (Infant & Nursery)117161 | Primary | Good | 9.2% | 235 |
| Waterside Academy145257 | Primary | Good | 46.4% | 177 |
| Watchlytes Primary School149333 | Primary | Inadequate | 28.8% | 158 |
| Warren Dell Primary School144905 | Primary | Outstanding | 25.2% | 272 |
| Walkern Primary School117154 | Primary | Good | 18.2% | 137 |
| Victoria Church of England Infant and Nursery School117423 | Primary | Requires Improvement | 1.5% | 137 |
| Verulam School137038 | Secondary | Good | 13.8% | 984 |
| University of Hertfordshire133783 | Not applicable | — | — | — |
| Two Waters Primary School117108 | Primary | Good | 8.0% | 236 |
| Tudor Primary School117109 | Primary | Good | 23.5% | 447 |