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Chertsey High School
Addlestone·South East·Free School
SecondaryFree SchoolAges 11–16Co-edNone
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Chertsey High School is a secondary free school in Addlestone, South East. It has not yet been rated by students on y.school. Be the first to rate this free school and help other students and parents understand what the school experience is really like.
In terms of academic performance, Chertsey High School has a Progress 8 score of -0.03 (below the national average), an Attainment 8 score of 51.0, 76% of students achieving grade 4+ in English and Maths.
The school has 898 pupils on roll, a teacher turnover rate of 34.5%, 14% of pupils eligible for free school meals, an overall absence rate of 8.2%.
All student scores on y.school are calculated from anonymous ratings using a transparent, deterministic methodology. Scores are freshness-weighted (18-month half-life) and include confidence tiers based on sample size, diversity, and consistency. For full details, see the y.school methodology.
Chertsey High School has a Progress 8 score of -0.03, which is below the national average of 0. Progress 8 measures how much progress students make between the end of Key Stage 2 and their GCSE results, compared to students with similar starting points nationally.
The school's Attainment 8 score is 51.0. Attainment 8 measures the average achievement of students across 8 qualifications including English, Maths, three EBacc subjects, and three open group qualifications.
76% of students at Chertsey High School achieved grade 4 or above in both English and Maths GCSEs.
Chertsey High School has an overall absence rate of 8.2%. The national average for secondary schools is approximately 5.5%.
The teacher turnover rate at Chertsey High School is 34.5%. This measures the percentage of teachers who left the school in the past year.
Chertsey High School has 898 pupils on roll.
14% of pupils are eligible for free school meals, which is used as a proxy for socioeconomic disadvantage.
23% of pupils receive SEN (Special Educational Needs) support or have an Education, Health and Care plan.
Source: Department for Education, Ofsted. Data shown for context only — does not influence the Student Score.
Data last updated: May 2026
Chertsey High School was rated "Good" by Ofsted following an inspection in February 2022 (4 years ago). Based on Ofsted's inspection cycle, Chertsey High School is due for reinspection this year (2026).
A "Good" rating means Ofsted found the school provides a high standard of education across all areas assessed. Around 65% of schools in England are rated Good, making it the most common rating.
Note: From November 2025, Ofsted replaced single-word judgements with detailed report cards covering multiple categories. While Chertsey High School's rating shown above was awarded under the previous system, Ofsted now provides more granular assessments. For the most up-to-date inspection information, check the school's report card on the Ofsted website.
Ofsted data is displayed for context only and does not influence the Student Score. For the official Ofsted report, visit reports.ofsted.gov.uk.
Crime Nearby
184/mo
Within ~1 mile (Police.uk)
Violent Crime
78/mo
42% of total
Air Quality
Good
NO₂: 13.7 µg/m³ · PM2.5: 7.6
Bus Stops
3
Within 500m
Nearest Station
Addlestone Rail Station
1.2km away
Source: Police.uk, DEFRA UK-Air, DfT NaPTAN. Based on the school's location — actual conditions may vary.
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Other schools in the Addlestone area
6.1
Above Average
/ 10
Data Score
Computed from 22 government data points. Not based on student reviews.
Source: Department for Education / Ofsted. Data shown for context only — does not influence the Student Score. Small schools may show extreme percentages due to small sample sizes.