| LA_code | 851 |
| LA_name | Portsmouth |
| EstablishmentNumber | 6004 |
| EstablishmentName | The Portsmouth Grammar School |
| TypeOfEstablishment | Other independent school |
| EstablishmentStatus | Open |
| PhaseOfEducation | Not applicable |
| StatutoryLowAge | 3 |
| StatutoryHighAge | 18 |
| Boarders | No boarders |
| NurseryProvision | Has Nursery Classes |
| OfficialSixthForm | Has a sixth form |
| Gender | Mixed |
| ReligiousCharacter | None |
| ReligiousEthos | Christian |
| Diocese | Not applicable |
| AdmissionsPolicy | Not applicable |
| TrustSchoolFlag | Not applicable |
| Trusts | |
| SchoolSponsorFlag | Not applicable |
| SchoolSponsors | |
| FederationFlag | Not applicable |
| Federations | |
| UKPRN | 10005159 |
| FurtherEducationType | Not applicable |
| Street | High Street |
| Locality | Old Portsmouth |
| Address3 | |
| Town | Portsmouth |
| County | Hampshire |
| Postcode | PO1 2LN |
| SchoolWebsite | www.pgs.org.uk |
| TelephoneNum | 02392360036 |
| HeadTitle | Mr |
| HeadFirstName | David |
| HeadLastName | Wickes |
| Linkedestablishments |