Glenthorne High School
Sutton Common Road, Sutton, SM3 9PS
- Phase
- Secondary
- School type
- Academy converter
- Ages
- 11 to 18
- Gender
- Mixed
- Religious character
- None
- Trust
- THE WILLOW LEARNING TRUST
- Headteacher
- Dr Sarah Peacock
- Admissions policy
- Non-selective
- SEN provision
- ASD - Autistic Spectrum Disorder
- Constituency
- Sutton and Cheam
- Setting
- Urban: Nearer to a major town or city
- Capacity
- 1,558
- Pupils on roll
- 1,754
- URN
- 136914
- Local authority
- Sutton
- Website
- School website
- Telephone
- 02086446307
About this school
Glenthorne High School is a secondary academy in Sutton. It teaches children aged 11 to 18 and has 1,754 pupils on roll.
Ofsted has inspected Glenthorne High School, and its latest judgement is set out below. Where the Department for Education has published them, its results and pupil characteristics appear below. Numbers and a report only go so far, so visit in person before you apply.
Ofsted judgement
Ofsted no longer gives schools a single overall grade. Each area of the school's work is graded on a five-point scale, and safeguarding is judged separately.
- Inclusion
- Exceptional
- Curriculum and teaching
- Strong standard
- Achievement
- Strong standard
- Attendance and behaviour
- Strong standard
- Personal development and wellbeing
- Exceptional
- Leadership and governance
- Strong standard
- Post-16 provision
- Strong standard
- Safeguarding
- Met
Exam results
Key stage 4 (GCSEs)
| Measure | 2022/23 | 2023/24 | 2024/25 |
|---|---|---|---|
| Pupils at the end of key stage 4 | 256 | 260 | 270 |
| Attainment 8 score | 61.4 | 60.8 | 61.6 |
| Progress 8 score | +0.75 +0.57 to +0.92 | +0.75 +0.57 to +0.92 | - |
| Grade 5 or above in English and maths | 73% | 76.2% | 75.2% |
| Grade 4 or above in English and maths | 89% | 90.4% | 87.8% |
| Entered the English Baccalaureate | 66% | 65.8% | 75.2% |
| English Baccalaureate average point score | 5.7 | 5.7 | 5.8 |
Progress 8 is paused nationally for the 2024/25 and 2025/26 school years. Those pupils sat no key stage 2 tests during the Covid pandemic, so there is no starting point to measure progress from. A blank figure here is not missing school data.
Trends over time
How Glenthorne High School has moved over recent years against the local and national picture. Every figure is shown in the table beneath its chart.
| Year | This school | Sutton average | England average |
|---|---|---|---|
| 2022/23 | 61.4 | 47.4 | 39.8 |
| 2023/24 | 60.8 | 46.9 | 39.5 |
| 2024/25 | 61.6 | 47.6 | 39 |
Department for Education KS4 performance data, published school results.
| Year | This school | England average |
|---|---|---|
| 2022/23 | 5.9% | 6.8% |
| 2023/24 | 5.7% | 6.6% |
| 2024/25 | 5.9% | 6.2% |
Department for Education pupil absence data.
| Year | This school |
|---|---|
| 2022/23 | 1,718 |
| 2023/24 | 1,758 |
| 2024/25 | 1,782 |
School census, spring count each academic year.
How Glenthorne High School compares
Glenthorne High School ranked 6th of 15 secondary schools in Sutton for Attainment 8 in 2024/25. Its Attainment 8 score was higher than 94% of England secondary schools that published results in 2024/25. Its absence rate was lower than 40% of England schools in 2024/25.
| School | Attainment 8 (2024/25) | Absence | FSM (6 years) | Pupils | Distance |
|---|---|---|---|---|---|
| This school | 61.6 | 5.9% | 15.6% | 1,754 | — |
| Greenshaw High School | 57.7 | 7.4% | 30.1% | 1,977 | 0.8 miles |
| Carshalton Boys Sports College | 45 | 9.5% | 31.4% | 1,539 | 1.2 miles |
| Harris Academy Morden | 46.6 | 7.9% | 46.6% | 873 | 1.2 miles |
| Sutton Grammar School | 80.3 | 4.8% | 2.6% | 1,061 | 1.2 miles |
| Cheam High School | 50.7 | 7.4% | 16% | 2,119 | 1.2 miles |
Results reflect each school's cohort as much as its teaching, and free school meals share is context, not a judgement. Small gaps between neighbouring schools are rarely meaningful on their own.
Inspection history
-
Graded inspection report6 January 2026
- 24 November 2021
School context
From the 2024/25 school census and absence figures.
- Free school meals (last 6 years)
- 15.6%
- English as an additional language
- 25.1%
- Overall absence
- 5.9%
- Persistent absence
- 11.75%
Location
Nearby schools
-
Greenshaw High School0.8 miles
Secondary · Sutton
-
Carshalton Boys Sports College1.2 miles
Secondary · Carshalton
-
Harris Academy Morden1.2 miles
Secondary · Morden
-
Sutton Grammar School1.2 miles
Secondary · Sutton
-
Cheam High School1.2 miles
Secondary · Sutton
Other schools in Sutton
Glenthorne High School ranks 3rd of the 7 ranked secondary schools in Sutton.
- Cheam High School Secondary
- Greenshaw High School Secondary
- Harris Academy Sutton Secondary
- Nonsuch High School for Girls Secondary
- Overton Grange School Secondary
- Sutton Grammar School Secondary
- Thomas Wall Nursery School Nursery
- All Saints Benhilton CofE Primary School Primary
- Avenue Primary Academy Primary
- Brookfield Primary Academy Primary
- Cheam Fields Primary Academy Primary
- Cheam Park Farm Primary Academy Primary
Common questions
- What ages does Glenthorne High School teach?
- Glenthorne High School teaches children aged 11 to 18. It is a secondary school in Sutton.
- Who is the headteacher of Glenthorne High School?
- The headteacher of Glenthorne High School is Dr Sarah Peacock, as recorded in the Department for Education's register of schools.
- Has Glenthorne High School been inspected?
- Ofsted has inspected Glenthorne High School, and its latest judgement is set out in the inspection section on this page, with the framework and the date it was made.
- How many pupils are at Glenthorne High School?
- Glenthorne High School has 1,754 pupils on roll, teaching children aged 11 to 18.
- Is Glenthorne High School full?
- Glenthorne High School has capacity for 1,558 pupils and 1,754 on roll (113%), so it is at or above its published capacity. Places are allocated through the local authority's admissions process, so capacity alone does not tell you whether a place is available.
- Is Glenthorne High School a faith school?
- No. Glenthorne High School has no designated religious character.
- Is Glenthorne High School a selective school?
- No. Glenthorne High School is recorded as non-selective in the schools register.
- Is Glenthorne High School part of an academy trust?
- Glenthorne High School is part of THE WILLOW LEARNING TRUST. Schools in a trust or federation share leadership and governance, but each keeps its own inspection record and results.
- What SEN provision does Glenthorne High School have?
- The schools register lists Glenthorne High School's special educational needs provision as: ASD - Autistic Spectrum Disorder. Contact the school to discuss how it would support a particular child.
- How have Glenthorne High School's results changed over recent years?
- Its Attainment 8 score was 61.4 in 2022/23 and 61.6 in 2024/25. The year-by-year figures, alongside local and national averages, are charted in the trends section on this page.
- How does Glenthorne High School compare with other schools in Sutton?
- Glenthorne High School ranked 6th of 15 secondary schools in Sutton for Attainment 8. Its Attainment 8 score was higher than 94% of England secondary schools that published results in 2024/25. Its absence rate was lower than 40% of England schools in 2024/25. Results reflect each cohort as well as the school, so treat rankings as a starting point.
- What is Glenthorne High School's absence rate?
- Glenthorne High School's overall absence rate is 5.9% in the latest published census, at or below the England average of 6.2%.
- What are Glenthorne High School's exam results?
- Where the Department for Education has published them, Glenthorne High School's key stage results are shown in the results section on this page, with the last three years so you can see the trend rather than a single year.
School details come from the Department for Education's Get Information About Schools register. Inspection outcomes come from Ofsted, and exam results from the Department for Education's school performance service. This page was last updated on 1 July 2026.