| Aldenham School | BOREHAMWOOD Hertfordshire, WD6 3AJ | Map | Website |
| Barking Abbey School | BARKING Essex, IG11 9AG | Map | Website |
| Bishop's Stortford High School | BISHOP'S STORTFORD Hertfordshire, CM23 3LU | Map | Website |
| Chancellor's School | HATFIELD Hertfordshire, AL9 7BN | Map | Website |
| Chauncy School | WARE Hertfordshire, SG12 0DP | Map | Website |
| Chesham Grammar School | CHESHAM Buckinghamshire, HP5 1BA | Map | Website |
| Croxley Danes School | RICKMANSWORTH Hertfordshire, WD18 9BL | Map | Website |
| Dame Alice Owens School | POTTERS BAR Hertfordshire, EN6 2DU | Map | Website |
| Dr Challoner's Grammar School | AMERSHAM Buckinghamshire, HP6 5HA | 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 |
| Haileybury | HERTFORD Hertfordshire, SG13 7NU | Map | Website |
| Haileybury Turnford School | WALTHAM CROSS Hertfordshire, EN8 0JU | Map | Website |
| Hitchin Boys' School | HITCHIN Hertfordshire, SG5 1JB | Map | Website |
| Ipswich School | IPSWICH Suffolk, IP1 3SG | Map | Website |
| John Warner School | HODDESDON Hertfordshire, EN11 0QF | Map | Website |
| Parmiter's School | WATFORD Hertfordshire, WD25 0UU | Map | Website |
| Presdales School | WARE Hertfordshire, SG12 9NX | Map | Website |
| Richard Hale School | HERTFORD Hertfordshire, SG13 8EN | Map | Website |
| Rickmansworth School | RICKMANSWORTH Hertfordshire, WD3 3AQ | Map | Website |
| Robert Barclay Academy | HODDESDON Hertfordshire, EN11 8JY | Map | Website |
| Sandringham School | ST ALBANS Hertfordshire, AL4 9NX | Map | Website |
| Shenfield High School | BRENTWOOD Essex, CM15 8RY | Map | Website |
| Simon Balle School | HERTFORD Hertfordshire, SG13 8AJ | Map | Website |
| Sir John Lawes School | HARPENDEN Hertfordshire, AL5 4QP | 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 |
| The Leventhorpe | SAWBRIDGEWORTH Hertfordshire, CM21 9BY | Map | Website |
| The Priory School | HITCHIN Hertfordshire, SG5 2UR | Map | Website |
| Verulam School | ST ALBANS Hertfordshire, AL1 4PR | Map | Website |
