St John's CofE Junior Mixed and Infant School is a primary school based in London under the Barnet local authority.

The school educates mixed pupils aged 3 to 11. It currently has 232 pupils on roll with space for 236, offering a broad curriculum across all primary year groups.

Ofsted last inspected the school on 19 September 2023, awarding it a Outstanding rating. The report noted positive aspects of leadership, safeguarding and the school’s approach to pupil development.