Largest Schools in Watford (2025)
Schools with the most pupils on roll. Ranked by the Success Index (England) from official English data; 42 schools in Watford, East of England. Rank positions shown on each profile are within England and East of England.
- 194Watford Grammar School for BoysWatford · Academy SecondaryPupils: 1,590
- 294Parmiter's SchoolWatford · Academy SecondaryPupils: 1,496
- 394Watford Grammar School for GirlsWatford · Academy SecondaryPupils: 1,427
- 441Westfield AcademyWatford · Academy SecondaryPupils: 1,331
- 573Saint Michael's Catholic High SchoolWatford · Academy SecondaryPupils: 1,130
- 629Future Academies WatfordWatford · Academy SecondaryPupils: 1,060
- 733The Grove AcademyWatford · Academy PrimaryPupils: 473
- 860Laurance Haines SchoolWatford · Academy PrimaryPupils: 463
- 992Holy Rood Catholic Primary SchoolWatford · Academy PrimaryPupils: 454
- 1059St Anthony's Catholic Primary SchoolWatford · Local authority PrimaryPupils: 448
- 1139Cherry Tree Primary SchoolWatford · Academy PrimaryPupils: 445
- 1254Beechfield SchoolWatford · Academy PrimaryPupils: 444
- 1369Knutsford Primary AcademyWatford · Academy PrimaryPupils: 438
- 1473The Orchard Primary SchoolWatford · Academy PrimaryPupils: 434
- 1566Watford St John's Church of England Primary SchoolWatford · Academy PrimaryPupils: 401
- 1653Central Primary SchoolWatford · Local authority PrimaryPupils: 399
- 1773Ascot Road Primary SchoolWatford · Academy PrimaryPupils: 391
- 1814Leavesden JMI SchoolWatford · Local authority PrimaryPupils: 389
- 1970Oxhey Wood Primary SchoolWatford · Academy PrimaryPupils: 387
- 2082Cassiobury Junior SchoolWatford · Local authority PrimaryPupils: 359
- 2198Cassiobury Infant and Nursery SchoolWatford · Local authority PrimaryPupils: 310
- 2276Lanchester Primary SchoolWatford · Academy PrimaryPupils: 298
- 2391Bromet Primary SchoolWatford · Academy PrimaryPupils: 270
- 2455St Catherine of Siena Catholic Primary SchoolWatford · Academy PrimaryPupils: 268
- 2573Warren Dell Primary SchoolWatford · Academy PrimaryPupils: 264
- 2683Field Junior SchoolWatford · Local authority PrimaryPupils: 244
- 2793Nascot Wood Junior SchoolWatford · Local authority PrimaryPupils: 240
- 2858St Joseph Catholic Primary SchoolWatford · Local authority PrimaryPupils: 239
- 2973Alban Wood Primary School and NurseryWatford · Academy PrimaryPupils: 238
- 3049Chater Junior SchoolWatford · Local authority PrimaryPupils: 237
- 3152Parkgate Junior SchoolWatford · Local authority PrimaryPupils: 236
- 3276Kingsway Junior SchoolWatford · Local authority PrimaryPupils: 235
- 3381Watford Field School (Infant & Nursery)Watford · Local authority PrimaryPupils: 231
- 3485Chater Infant SchoolWatford · Local authority PrimaryPupils: 223
- 3527Coates Way JMI and Nursery SchoolWatford · Local authority PrimaryPupils: 223
- 3657St Meryl SchoolWatford · Local authority PrimaryPupils: 219
- 3753Greenfields Primary SchoolWatford · Local authority PrimaryPupils: 212
- 3897Nascot Wood Infant and Nursery SchoolWatford · Local authority PrimaryPupils: 202
- 3996Parkgate Infants' and Nursery SchoolWatford · Local authority PrimaryPupils: 202
- 4033Willow Tree Primary SchoolWatford · Academy PrimaryPupils: 185
- 4157Kingsway Infants' SchoolWatford · Local authority PrimaryPupils: 171
- 429Woodhall Primary SchoolWatford · Local authority PrimaryPupils: 76
| # | School | Sector | Pupils | Success Index (England) | Key result | Students |
|---|---|---|---|---|---|---|
| 1 | Watford Grammar School for Boys Watford · Secondary · Ages 11–18 | Academy | 1,590 | 94.3 Top 5% | 68.9 Attainment 8 | 1,590 |
| 2 | Parmiter's School Watford · Secondary · Ages 11–18 | Academy | 1,496 | 94.2 Top 5% | 66.5 Attainment 8 | 1,496 |
| 3 | Watford Grammar School for Girls Watford · Secondary · Ages 11–19 | Academy | 1,427 | 93.9 Top 5% | 68.2 Attainment 8 | 1,427 |
| 4 | Westfield Academy Watford · Secondary · Ages 11–18 | Academy | 1,331 | 41.2 Lower 50% | 41.4 Attainment 8 | 1,331 |
| 5 | Saint Michael's Catholic High School Watford · Secondary · Ages 11–18 | Academy | 1,130 | 72.9 Top 25% | 50.9 Attainment 8 | 1,130 |
| 6 | Future Academies Watford Watford · Secondary · Ages 11–18 | Academy | 1,060 | 29.2 Lower 50% | 39.8 Attainment 8 | 1,060 |
| 7 | The Grove Academy Watford · Primary · Ages 3–11 | Academy | 473 | 32.9 Lower 50% | 64% KS2 expected standard (RWM) | 473 |
| 8 | Laurance Haines School Watford · Primary · Ages 3–11 | Academy | 463 | 60.1 Top 50% | 70% KS2 expected standard (RWM) | 463 |
| 9 | Holy Rood Catholic Primary School Watford · Primary · Ages 3–11 | Academy | 454 | 92.1 Top 5% | 84% KS2 expected standard (RWM) | 454 |
| 10 | St Anthony's Catholic Primary School Watford · Primary · Ages 3–11 | Local authority | 448 | 59.2 Top 50% | 61% KS2 expected standard (RWM) | 448 |
| 11 | Cherry Tree Primary School Watford · Primary · Ages 3–11 | Academy | 445 | 38.5 Lower 50% | 48% KS2 expected standard (RWM) | 445 |
| 12 | Beechfield School Watford · Primary · Ages 3–11 | Academy | 444 | 53.7 Top 50% | 72% KS2 expected standard (RWM) | 444 |
| 13 | Knutsford Primary Academy Watford · Primary · Ages 3–11 | Academy | 438 | 69.3 Top 50% | 72% KS2 expected standard (RWM) | 438 |
| 14 | The Orchard Primary School Watford · Primary · Ages 3–11 | Academy | 434 | 73.1 Top 25% | 70% KS2 expected standard (RWM) | 434 |
| 15 | Watford St John's Church of England Primary School Watford · Primary · Ages 4–11 | Academy | 401 | 66.0 Top 50% | 67% KS2 expected standard (RWM) | 401 |
| 16 | Central Primary School Watford · Primary · Ages 3–11 | Local authority | 399 | 53.1 Top 50% | 69% KS2 expected standard (RWM) | 399 |
| 17 | Ascot Road Primary School Watford · Primary · Ages 4–11 | Academy | 391 | 72.9 Top 25% | 75% KS2 expected standard (RWM) | 391 |
| 18 | Leavesden JMI School Watford · Primary · Ages 3–11 | Local authority | 389 | 14.2 Lower 50% | 40% KS2 expected standard (RWM) | 389 |
| 19 | Oxhey Wood Primary School Watford · Primary · Ages 3–11 | Academy | 387 | 69.6 Top 50% | 75% KS2 expected standard (RWM) | 387 |
| 20 | Cassiobury Junior School Watford · Primary · Ages 7–11 | Local authority | 359 | 81.9 Top 25% | 77% KS2 expected standard (RWM) | 359 |
| 21 | Cassiobury Infant and Nursery School Watford · Primary · Ages 3–7 | Local authority | 310 | 97.8 Top 5% | – | 310 |
| 22 | Lanchester Primary School Watford · Primary · Ages 4–11 | Academy | 298 | 75.6 Top 25% | 73% KS2 expected standard (RWM) | 298 |
| 23 | Bromet Primary School Watford · Primary · Ages 5–11 | Academy | 270 | 91.3 Top 5% | 85% KS2 expected standard (RWM) | 270 |
| 24 | St Catherine of Siena Catholic Primary School Watford · Primary · Ages 4–11 | Academy | 268 | 55.4 Top 50% | 71% KS2 expected standard (RWM) | 268 |
| 25 | Warren Dell Primary School Watford · Primary · Ages 2–11 | Academy | 264 | 73.3 Top 25% | 73% KS2 expected standard (RWM) | 264 |
| 26 | Field Junior School Watford · Primary · Ages 7–11 | Local authority | 244 | 82.9 Top 25% | 85% KS2 expected standard (RWM) | 244 |
| 27 | Nascot Wood Junior School Watford · Primary · Ages 7–11 | Local authority | 240 | 93.1 Top 5% | 88% KS2 expected standard (RWM) | 240 |
| 28 | St Joseph Catholic Primary School Watford · Primary · Ages 3–11 | Local authority | 239 | 57.9 Top 50% | 68% KS2 expected standard (RWM) | 239 |
| 29 | Alban Wood Primary School and Nursery Watford · Primary · Ages 3–11 | Academy | 238 | 73.2 Top 25% | 74% KS2 expected standard (RWM) | 238 |
| 30 | Chater Junior School Watford · Primary · Ages 7–11 | Local authority | 237 | 48.9 Lower 50% | 63% KS2 expected standard (RWM) | 237 |
| 31 | Parkgate Junior School Watford · Primary · Ages 7–11 | Local authority | 236 | 52.3 Top 50% | 58% KS2 expected standard (RWM) | 236 |
| 32 | Kingsway Junior School Watford · Primary · Ages 7–11 | Local authority | 235 | 75.7 Top 25% | 80% KS2 expected standard (RWM) | 235 |
| 33 | Watford Field School (Infant & Nursery) Watford · Primary · Ages 3–7 | Local authority | 231 | 80.7 Top 25% | – | 231 |
| 34 | Chater Infant School Watford · Primary · Ages 3–7 | Local authority | 223 | 84.6 Top 10% | – | 223 |
| 35 | Coates Way JMI and Nursery School Watford · Primary · Ages 3–11 | Local authority | 223 | 27.1 Lower 50% | 47% KS2 expected standard (RWM) | 223 |
| 36 | St Meryl School Watford · Primary · Ages 3–11 | Local authority | 219 | 57.4 Top 50% | 57% KS2 expected standard (RWM) | 219 |
| 37 | Greenfields Primary School Watford · Primary · Ages 3–11 | Local authority | 212 | 52.7 Top 50% | 67% KS2 expected standard (RWM) | 212 |
| 38 | Nascot Wood Infant and Nursery School Watford · Primary · Ages 3–7 | Local authority | 202 | 96.7 Top 5% | – | 202 |
| 39 | Parkgate Infants' and Nursery School Watford · Primary · Ages 3–7 | Local authority | 202 | 96.3 Top 5% | – | 202 |
| 40 | Willow Tree Primary School Watford · Primary · Ages 3–11 | Academy | 185 | 33.3 Lower 50% | – | 185 |
| 41 | Kingsway Infants' School Watford · Primary · Ages 5–7 | Local authority | 171 | 56.6 Top 50% | – | 171 |
| 42 | Woodhall Primary School Watford · Primary · Ages 3–11 | Local authority | 76 | 9.0 Lower 50% | 39% KS2 expected standard (RWM) | 76 |
Watford Grammar School for Boys in Watford leads the 2025 list of largest schools in Watford with Pupils 1,590. Of the 42 schools shown, 22 are academy, 20 are local authority.
For the full picture see the wider East of England largest schools league table, every school on the Watford page, or the comparison tool to put a shortlist side by side.
Free academic assessment
Is your child on track for their SATs and GCSEs?
Success Tutoring offers personalised English and maths tutoring mapped to the National Curriculum. Start with a free online assessment and a clear plan for the year ahead.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Centres across NSW, VIC, QLD, WA, SA and ACT
Frequently asked questions
What is the best largest school in Watford?
Watford Grammar School for Boys in Watford, East of England ranks first among largest schools in Watford with Pupils 1,590 (Pupils on roll: 1,590).
How are largest schools in Watford ranked?
Schools with the most pupils on roll. Only schools eligible for the Success Index (England) are included; the index is shown alongside for context.
Are these 2025 rankings official?
No. They are computed by Success Tutoring from official English data (DfE – Get Information About Schools; DfE – Compare school and college performance). Independent schools rarely appear in the performance tables, so most receive no attainment components and no score.