| Yorke Mead Primary School117130 | Primary | Outstanding | 8.6% | 441 |
| York Road Nursery School117071 | Nursery | Outstanding | 0.0% | 108 |
| York House School117636 | Not applicable | — | — | 331 |
| Yewtree Primary School135222 | Primary | Good | 44.2% | 321 |
| Yavneh Primary School142862 | Primary | Outstanding | 1.0% | 418 |
| Yavneh College136922 | Secondary | Good | 6.1% | 1,085 |
| Wymondley Junior Mixed and Infant School117177 | Primary | Good | 20.2% | 94 |
| Wormley CofE Primary School117400 | Primary | Good | 28.3% | 452 |
| Woolgrove School, Special Needs Academy137997 | Not applicable | Good | 37.6% | 125 |
| Woolenwick Junior School117322 | Primary | Good | 25.4% | 232 |
| Woolenwick Infant and Nursery School117323 | Primary | Outstanding | 18.9% | 207 |
| Woodside Primary School147879 | Primary | Good | 12.7% | 229 |
| Woodlands Primary School117181 | Primary | Good | 34.0% | 218 |
| Woodhall Primary School117194 | Primary | Good | 46.5% | 76 |
| Woodfield School117682 | Not applicable | Good | 36.9% | 125 |
| Wood End School117358 | Primary | Outstanding | 2.1% | 457 |
| Windhill21141851 | Primary | Outstanding | 11.8% | 451 |
| Windermere Primary School117217 | Primary | Requires Improvement | 40.3% | 134 |
| Wilshere-Dacre Junior Academy140611 | Primary | Good | 11.5% | 234 |
| Willow Tree Primary School151528 | Primary | Requires Improvement | 29.2% | 185 |
| William Ransom Primary School117314 | Primary | Requires Improvement | 1.7% | 419 |
| Wilbury Junior School144903 | Primary | Good | 36.4% | 228 |
| Widford School117176 | Primary | Good | 3.1% | 65 |
| Whitehill Junior School117253 | Primary | Good | 7.1% | 241 |
| White Trees Independent School140655 | Not applicable | — | — | 76 |
| Wheatfields Junior Mixed School146878 | Primary | Good | 3.6% | 358 |
| Wheatfields Infants' and Nursery School146893 | Primary | Good | 7.5% | 243 |
| Wheatcroft Primary School117328 | Primary | Good | 14.7% | 319 |
| Weston Way Nursery School117065 | Nursery | Outstanding | 0.0% | 80 |
| Weston Primary & Nursery School117413 | Primary | Good | 17.5% | 104 |
| Westfield Primary School117254 | Primary | Requires Improvement | 29.3% | 140 |
| Westfield Academy140049 | Secondary | Good | 26.9% | 1,331 |
| Westbrook Hay117610 | Not applicable | — | — | 360 |
| West Herts College130720 | 16 plus | — | — | — |
| Welwyn St Mary's Church of England Voluntary Aided Primary School117490 | Primary | Good | 7.9% | 418 |
| Watton-at-Stone Primary and Nursery School117171 | Primary | Good | 13.1% | 235 |
| Watling View School117683 | Not applicable | Good | 39.0% | 115 |
| Watford St John's Church of England Primary School142221 | Primary | Requires Improvement | 12.7% | 401 |
| Watford Grammar School for Girls136289 | Secondary | Outstanding | 7.2% | 1,427 |
| Watford Grammar School for Boys136276 | Secondary | Outstanding | 6.5% | 1,590 |
| Watford Field School (Infant & Nursery)117161 | Primary | Good | 10.1% | 231 |
| Waterside Academy145257 | Primary | Expected standard | 43.9% | 166 |
| Watchlytes Primary School149333 | Primary | Expected standard | 33.3% | 158 |
| Warren Dell Primary School144905 | Primary | Outstanding | 23.2% | 264 |
| Walkern Primary School117154 | Primary | Good | 20.1% | 154 |
| Victoria Church of England Infant and Nursery School117423 | Primary | Requires Improvement | 3.1% | 141 |
| Verulam School137038 | Secondary | Good | 15.2% | 987 |
| University of Hertfordshire133783 | Not applicable | — | — | — |
| Two Waters Primary School117108 | Primary | Good | 9.0% | 236 |
| Tudor Primary School117109 | Primary | Good | 22.4% | 439 |