| LA_code | 919 |
| LA_name | Hertfordshire |
| EstablishmentNumber | 4039 |
| EstablishmentName | The John Warner School |
| TypeOfEstablishment | Academy converter |
| EstablishmentStatus | Open |
| PhaseOfEducation | Secondary |
| StatutoryLowAge | 11 |
| StatutoryHighAge | 18 |
| Boarders | No boarders |
| NurseryProvision | No Nursery Classes |
| OfficialSixthForm | Has a sixth form |
| Gender | Mixed |
| ReligiousCharacter | None |
| ReligiousEthos | Does not apply |
| Diocese | |
| AdmissionsPolicy | |
| TrustSchoolFlag | Supported by a multi-academy trust |
| Trusts | DANES EDUCATIONAL TRUST |
| SchoolSponsorFlag | Linked to a sponsor |
| SchoolSponsors | St Clement Danes School |
| FederationFlag | Not applicable |
| Federations | |
| UKPRN | 10094450 |
| FurtherEducationType | |
| Street | Stanstead Road |
| Locality | |
| Address3 | |
| Town | Hoddesdon |
| County | |
| Postcode | EN11 0QF |
| SchoolWebsite | https://www.johnwarner.herts.sch.uk/ |
| TelephoneNum | 01992462889 |
| HeadTitle | Ms |
| HeadFirstName | Rachel |
| HeadLastName | Brindley |
| Linkedestablishments |