SecondaryAcademyOpen

Dr Challoner's High School

Cokes Lane, Amersham, Buckinghamshire, HP7 9QB · URN 137219

Public data summary

8.7

out of 10 · 29 data sources

Coverage 85% · Strong

Record

At a glance

Ofsted: Outstanding
Pupils: 1,358
Age range: 11–18
Gender: Girls
Capacity: 1,145
Local authority: Buckinghamshire

Outcomes

Published performance

GCSE Progress 8: 1.11
GCSE Attainment 8: 78.2
A-level average: B+
Sustained education: 79.0%
University: 78.0%

Context

Attendance and community

Overall absence: 5.3%
Persistent absence: 13.4%
Free school meals: 1.8%
SEN support: 3.1%
English additional language: 15.8%

Resources

Workforce and funding

Pupil–teacher ratio: 20.6:1
Average class size: 22.9
Staff turnover: 5.3%

Official-data model

Data dimensions

Progress

10.0

3 contributing signals

Attendance

8.5

6 contributing signals

Resources

7.4

4 contributing signals

Equity

8.4

6 contributing signals

Destinations

6.9

5 contributing signals

Achievement

9.9

5 contributing signals

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School contact

Official website

01494763296

School records are retained from official public datasets and managed through the Y School admin. This atlas is a supporting layer, not the current Y School product. Last refreshed 02/06/2026.