01 ·
Admissions and assessment
Selective entry
St John's Preparatory and Senior School is an independent selective school in Potters Bar, Hertfordshire. The Get Information about Schools register records its admissions policy as Selective.
It admits mixed pupils aged 3-19 and has a sixth form. It does not board pupils. Records show 493 pupils against a published capacity of 558 places.
Confirm the current entry age, assessment provider, test subjects, registration dates and qualifying score with the school or admissions authority.
Admissions source record →02 ·
Location
03 ·
Data and verification
| Source register | https://get-information-schools.service.gov.uk/Downloads |
|---|---|
| Data extract | England core fields from the daily GIAS all-establishments extract dated 17 September 2026. |
| Last verified | 2026-09-17 |
| Coordinate source | Postcode centroid |
| Official ID | URN 102065 |
| Verification status | Core register fields verified |