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Ofsted: Outstanding schoolGrammar School

St John's Preparatory and Senior School

verifiedData: DfE 2024/25–2025/26 · Ofsted
personMrs C Tardios
location_onPotters Bar, EN6 5QT
language Visit Website phone 1707657294
verified

Ofsted

Outstanding

groups

Students

472

trending_up

Attainment 8

68.1

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GCSE Rank

#2 in Enfield

#142 of 4,663 nationally

summarize

St John's Preparatory and Senior School is a Other independent school school in Potters Bar, serving ages 3-19. Rated Outstanding by Ofsted — the highest possible grade.

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School Summary

St John's Preparatory and Senior School is an other independent school in Potters Bar, Enfield, admitting pupils aged 3-19. It has a sixth form offering post-16 education. The school has approximately 497 pupils on roll.

In 2025, pupils achieved an Attainment 8 score of 68.1, placing the school #2 in Enfield and #142 of 4,663 nationally. 97.50% of pupils achieved grade 5 or above in English and Maths. 53.1% of all GCSE entries were graded 9–7.

The sixth form offers 15 A-level subjects. 67.6% of A-level entries were graded A*–B, with 39.7% at A*–A. A-level value added: +0.23 — students made above-average progress at sixth form.

verified Source: DfE 2024/25–2025/26 · Ofsted

Academic Performance

verified Data: UK Gov 2024/25
analytics

Secondary Performance Trends (KS4)

2025
Progress 8 Score

-

Attainment 8

68.1

Grade 5+ E&M

97.50%

Grade 9–7 (all GCSEs)53.1%
Entering EBacc40.00%
EBacc APS5.95
2024
Progress 8 Score

NP

vs National Avg
Attainment 8

70.1

Grade 5+ E&M

-%

Entering EBacc47.50%
EBacc APS6.38
2023
Progress 8 Score

NP

vs National Avg
Attainment 8

67.2

Grade 5+ E&M

-%

Entering EBacc38%
EBacc APS5.87
2022
Progress 8 Score

NP

vs National Avg
Attainment 8

69.9

Grade 5+ E&M

-%

Entering EBacc40%
EBacc APS5.81
2021
Progress 8 Score

-

Attainment 8

-

Grade 5+ E&M

-%

Entering EBacc41%
EBacc APS-
2019
Progress 8 Score

NP

vs National Avg
Attainment 8

62.8

Grade 5+ E&M

-%

Entering EBacc38%
EBacc APS5.39
2018
Progress 8 Score

NP

vs National Avg
Attainment 8

64.7

Grade 5+ E&M

-%

Entering EBacc33%
EBacc APS5.2
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Sixth Form (A-Level) Performance

A-level results for students who stayed in sixth form at this school. Value added measures how much progress students made relative to their GCSE starting point.

2025
A-Level Value Added

+0.23

vs expected from GCSEs

Pupils make above-average progress at A-level.

Avg Grade

B

Grade Breakdown
Achieving A*16.2%
Achieving A*–A39.7%
Achieving A*–B67.6%
VA Banding Average
A-level subjects offered15
2024
A-Level Value Added

-0.33

vs expected from GCSEs

Pupils make below-expected progress at A-level.

Avg Grade

C

2023
Avg Grade

C+

2022
Avg Grade

B

Source: DfE A Level and Other 16-18 Results

Ofsted History

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No inspection data

We couldn't find any historical Ofsted records for this specific school location.

Data sources: School information from GIAS (DfE). Ofsted inspection data from Ofsted. Performance data from DfE Performance Tables. Parent View data from Ofsted Parent View. Census data from DfE Explore Education Statistics. Rankings are computed by SchoolsInfo.uk using public DfE data. Data updated annually. Last refresh: March 2026. How we calculate rankings →

Disclaimer: The information on this page is provided for general reference purposes only and is sourced from publicly available government datasets. SchoolsInfo.uk is an independent website and is not affiliated with, endorsed by, or acting on behalf of any school, local authority, Ofsted, or the Department for Education. Data may not reflect the current position of the school — always verify directly with the school or the relevant official body before making any decisions. School performance data relates to historical cohorts and may not be representative of current or future results. Rankings and composite scores are compiled by SchoolsInfo.uk and do not constitute an official government assessment. Nothing on this page constitutes professional advice.

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