# Colnbrook School

Colnbrook School is a special school in Three Rivers, for pupils aged 4 to 11.

It had 130 pupils at the school census in January 2026.

Special school. Code E117670. [Three Rivers](https://openindex.co.uk/three-rivers)

- Phase: Special
- Type: Community special school
- Ages: 4 to 11
- Pupils: 130
- Council: Three Rivers
- URN: 117670

## Latest Ofsted outcome

School remains Outstanding, April 2023
- Latest ungraded inspection: School remains Outstanding, 20 April 2023
Edition: Latest inspections as at 30 September 2026
Outcomes as Ofsted published them. Report cards (from November 2025) give no overall grade, and grades under different frameworks cannot be compared.

## Results

Source: Department for Education school performance tables (Open Government Licence).

In 2024/25, 0% of pupils at Colnbrook School met the expected standard in reading, writing and maths, against 64% in Hertfordshire and 62% in England.
0% reached the higher standard (8% in England).

### End of primary school (KS2): 2024/25

| Measure | This school | Hertfordshire | England |
| --- | --- | --- | --- |
| Met the expected standard in reading, writing and maths | 0% | 64% | 62% |
| Reached the higher standard | 0% | 11% | 8% |
| Average scaled score in reading | Does not apply to this school | 107 | 106 |
| Average scaled score in maths | Does not apply to this school | 105 | 105 |

Colnbrook School teaches pupils with needs that most schools' pupils do not have, often in very small year groups, so its results are not a fair comparison with mainstream schools. They are not shown on the map.
Progress scores from KS1 to KS2 were not published for 2024/25, because the KS1 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

Distances are in a straight line. Admissions and catchments are set by councils and schools.

- [Warren Dell Primary School](https://openindex.co.uk/school/warren-dell-primary-school-e144905): 90 m. Primary. Outstanding (overall), January 2024. 73% met the expected standard at KS2 (2024/25)
- [St Joseph Catholic Primary School](https://openindex.co.uk/school/st-joseph-catholic-primary-school-e117465): 410 m. Primary. School remains Outstanding, June 2023. 68% met the expected standard at KS2 (2024/25)
- [Oxhey Wood Primary School](https://openindex.co.uk/school/oxhey-wood-primary-school-e144906): 490 m. Primary. Report card, July 2026: safeguarding met. 75% met the expected standard at KS2 (2024/25)
- [St Meryl School](https://openindex.co.uk/school/st-meryl-school-e117166): 1 km. Primary. Report card, March 2026: safeguarding met. 57% met the expected standard at KS2 (2024/25)
- [Woodhall Primary School](https://openindex.co.uk/school/woodhall-primary-school-e117194): 1.1 km. Primary. Good (overall), November 2022. 39% met the expected standard at KS2 (2024/25)
- [Greenfields Primary School](https://openindex.co.uk/school/greenfields-primary-school-e117193): 1.2 km. Primary. Report card, June 2026: safeguarding met. 67% met the expected standard at KS2 (2024/25)

## Sources and further information

- [Schools: methods, licences and inspection sources](https://openindex.co.uk/sources/schools)
- [Get Information about Schools](https://get-information-schools.service.gov.uk/Establishments/Establishment/Details/117670)
- [Ofsted reports](https://reports.ofsted.gov.uk/provider/21/117670)

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/school/colnbrook-school-e117670, or to one figure with its anchor, https://openindex.co.uk/school/colnbrook-school-e117670#sc-results.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.9. The HTML page: https://openindex.co.uk/school/colnbrook-school-e117670