| Aldenham School | BOREHAMWOOD Hertfordshire, WD6 3AJ | Map | Website |
| Ashlyns School | BERKHAMSTED Hertfordshire, HP4 3AH | Map | Website |
| Avanti Grange Secondary School | BISHOP’S STORTFORD Hertfordshire, CM23 1JJ | tbc | Website |
| Beaumont School | ST ALBANS Hertfordshire, AL4 0XB | Map | Website |
| Chauncy School | WARE Hertfordshire, SG12 0DP | Map | Website |
| Dame Alice Owens School | POTTERS BAR Hertfordshire, EN6 2DU | Map | Website |
| Freman College | BUNTINGFORD Hertfordshire, SG9 9BT | Map | Website |
| Goffs Academy | CHESHUNT Hertfordshire, EN7 5QW | tbc | Website |
| Goffs School | WALTHAM CROSS Hertfordshire, EN7 5QW | Map | Website |
| Haberdashers' Elstree Schools | ELSTREE Hertfordshire, WD6 3AF | Map | Website |
| Haileybury | HERTFORD Hertfordshire, SG13 7NU | Map | Website |
| Haileybury Turnford School | WALTHAM CROSS Hertfordshire, EN8 0JU | Map | Website |
| Heath Mount School | HERTFORD Hertfordshire, SG14 3NG | Map | Website |
| John Warner School | HODDESDON Hertfordshire, EN11 0QF | Map | Website |
| Katherine Warington School | HARPENDEN Hertfordshire, AL5 5FH | tbc | Website |
| Longdean School | HEMEL HEMPSTEAD Hertfordshire, HP3 8JB | Map | Website |
| Loughborough Schools Foundation | LOUGHBOROUGH Leicestershire, LE11 2DU | Map | Website |
| Monks Walk School | WELWYN GARDEN CITY Hertfordshire, AL8 7NL | Map | Website |
| Nicholas Breakspear Catholic School | ST ALBANS Hertfordshire, AL4 0TT | Map | Website |
| Onslow St Audrey's School | HATFIELD Hertfordshire, AL10 8AB | Map | Website |
| Parmiter's School | WATFORD Hertfordshire, WD25 0UU | Map | Website |
| Presdales School | WARE Hertfordshire, SG12 9NX | Map | Website |
| Princes Risborough School | HIGH WYCOMBE Buckinghamshire, HP27 0DT | Map | Website |
| Richard Hale School | HERTFORD Hertfordshire, SG13 8EN | Map | Website |
| Ridgeway Academy | WELWYN GARDEN CITY Hertfordshire, AL7 2AF | Map | Website |
| Robert Barclay Academy | HODDESDON Hertfordshire, EN11 8JY | Map | Website |
| Roundwood Park School | HARPENDEN Hertfordshire, AL5 3AE | Map | Website |
| Simon Balle School | HERTFORD Hertfordshire, SG13 8AJ | Map | Website |
| St Clement Danes School | CHORLEYWOOD Hertfordshire, WD3 6EW | Map | Website |
| St Columba's College | ST ALBANS Hertfordshire, AL3 4AW | Map | Website |
| St Edmund's College, Ware | WARE Hertfordshire, SG11 1DS | Map | Website |
| St Joan of Arc Catholic School | RICKMANSWORTH Hertfordshire, WD3 1HG | Map | Website |
| St Margaret's School, Bushey | BUSHEY Hertfordshire, WD23 1DT | Map | Website |
| St Marys High School (VA) | WALTHAM CROSS Hertfordshire, EN7 5FB | Map | Website |
| St Michael's Catholic High School | WATFORD Hertfordshire, WD25 0SS | Map | Website |
| The Leventhorpe | SAWBRIDGEWORTH Hertfordshire, CM21 9BY | Map | Website |
| The Marlborough Science Academy | ST ALBANS Hertfordshire, AL1 2QA | Map | Website |
| Tring School | TRING Hertfordshire, HP23 5JD | Map | Website |
