| St Mary's Catholic School148499 | Secondary | Good | 10.1% | 1,106 |
| St Mary's Church of England High School (va)138360 | Secondary | Good | 28.2% | 911 |
| St Mary's Church of England VA Primary School, Welham Green117497 | Primary | Requires Improvement | 24.8% | 137 |
| St Mary's CofE Primary School, Northchurch117424 | Primary | Good | 10.3% | 226 |
| St Mary's Infants' School117384 | Primary | Good | 23.2% | 82 |
| St Mary's Junior Mixed School117385 | Primary | Good | 32.8% | 174 |
| St Mary's Rickmansworth CofE Primary School150576 | Primary | Good | 13.4% | 194 |
| St Mary's Voluntary Controlled Church of England Junior School117409 | Primary | Good | 12.6% | 231 |
| St Meryl School117166 | Primary | Expected standard | 11.1% | 219 |
| St Michael's Church of England Primary School117426 | Primary | Good | 15.6% | 226 |
| St Michael's Church of England Voluntary Aided Primary School, St Albans117451 | Primary | Outstanding | 6.5% | 201 |
| St Michael's Woolmer Green CofE VA Primary School117461 | Primary | Good | 11.8% | 186 |
| St Nicholas CofE (va) Primary School and Nursery117456 | Primary | Requires Improvement | 19.6% | 186 |
| St Nicholas CofE VA Primary School117434 | Primary | Good | 4.0% | 149 |
| St Nicholas Elstree Church of England VA Primary School117431 | Primary | Requires Improvement | 20.5% | 45 |
| St Paul's Catholic Primary School151596 | Primary | Good | 22.8% | 181 |
| St Paul's Church of England Primary School, Langleybury117417 | Primary | Good | 11.0% | 226 |
| St Paul's Church of England Voluntary Aided Primary School, Chipperfield117441 | Primary | Good | 10.8% | 196 |
| St Paul's Walden Primary School117144 | Primary | Good | 27.0% | 74 |
| St Peter's Church of England Voluntary Aided Primary School117448 | Primary | Good | 7.4% | 275 |
| St Peter's School117140 | Primary | Good | 6.0% | 392 |
| St Philip Howard Catholic Primary School117469 | Primary | Good | 25.1% | 438 |
| St Rose's Catholic Infant School150799 | Primary | Good | 8.6% | 197 |
| St Teresa Catholic Primary School117466 | Primary | Good | 11.7% | 196 |
| St Thomas More Roman Catholic Primary School138354 | Primary | Good | 7.9% | 221 |
| St Thomas More Roman Catholic Primary School, a Voluntary Academy149742 | Primary | Requires Improvement | 8.3% | 144 |
| St Thomas of Canterbury Catholic Primary School148495 | Primary | Good | 11.5% | 112 |
| Stanborough Primary School135596 | Not applicable | — | — | 64 |
| Stanborough School137847 | Secondary | Good | 18.7% | 1,287 |
| Stanborough Secondary School117640 | Not applicable | — | — | 50 |
| Stapleford Primary School117455 | Primary | Good | 9.2% | 82 |
| Stevenage Education Support Centre130359 | Not applicable | Outstanding | 50.0% | 2 |
| Stonehill School117345 | Primary | Good | 31.1% | 220 |
| Stormont School117644 | Not applicable | — | — | 112 |
| Strathmore Infant and Nursery School117114 | Primary | Good | 3.7% | 198 |
| Studlands Rise First School117331 | Primary | Good | 6.2% | 170 |
| Summercroft Primary School137351 | Primary | Good | 8.0% | 436 |
| Summerswood Primary School117182 | Primary | Requires Improvement | 23.4% | 344 |
| Swallow Dell Primary and Nursery School133488 | Primary | Good | 28.8% | 418 |
| Swing Gate Infant School and Nursery117260 | Primary | Good | 5.0% | 144 |
| Tanners Wood Junior Mixed and Infant School117178 | Primary | Good | 20.8% | 418 |
| Tannery Drift School117134 | Primary | Good | 8.3% | 320 |
| Templewood Primary School117174 | Primary | Good | 6.8% | 225 |
| Tenterfield Nursery School117078 | Nursery | Outstanding | 0.0% | 71 |
| Tewin Cowper Church of England Voluntary Aided Primary School117457 | Primary | Requires Improvement | 10.7% | 122 |
| The Abbey Church of England Voluntary Aided Primary School, St Albans117449 | Primary | Good | 3.2% | 189 |
| The Adeyfield Academy145430 | Secondary | Good | 34.1% | 858 |
| The Astley Cooper School117552 | Secondary | Good | 34.3% | 914 |
| The Bishop's Stortford High School117577 | Secondary | Outstanding | 7.1% | 1,279 |
| The Broxbourne School136396 | Secondary | Outstanding | 12.5% | 1,442 |