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The John Warner School

Secondary school

The John Warner School is a secondary school in Broxbourne, for pupils aged 11 to 18. It had 726 pupils at the school census in January 2026.

Ofsted

Latest inspections as at 30 September 2026

Inadequate (overall), October 2022, before the school changed, special measures

Inspection
Graded inspection, 11 October 2022
Overall effectiveness
Inadequate
Quality of education
Requires improvement
Behaviour and attitudes
Inadequate
Personal development
Inadequate
Leadership and management
Inadequate

Outcomes as Ofsted published them. Report cards (from November 2025) give no overall grade, and grades under different frameworks can’t be compared.

Results

Department for Education

In 2025/26, the average Attainment 8 score at The John Warner School was 40.1, against 46.5 in Broxbourne and 46.2 in England.

34.7% of its pupils got grade 5 or above in English and maths GCSEs (46.3% in England).

End of secondary school (KS4, GCSEs)

2025/26, provisional
MeasureThis schoolBroxbourneEngland
Average Attainment 8 score40.146.546.2
Grade 5 or above in English and maths34.7%46.2%46.3%
Grade 4 or above in English and maths60.5%66.9%64.8%
Pupils at the end of KS4147––
  • The 2025/26 figures are provisional. The Department for Education publishes revised ones later in the school year.
  • Progress 8 cannot be worked out for 2025/26, because the KS2 tests that give the starting point were cancelled in 2020 and 2021.
  • Results reflect the pupils a school admits as well as its teaching, and a year's results can move a lot in a small school.

Schools nearby

In a straight line

Admissions and catchments are set by councils and schools, which Open Index doesn’t map. Every school in Broxbourne

Where these figures come from

  • Schools: the school lists of the Department for Education, the Welsh Government and the Scottish Government, with Ofsted’s latest inspections for England.
  • Results: the Department for Education’s school performance tables (Open Government Licence).