Colnbrook School
Special / other · Watford · WD19 7UY
Earlier grade, confirmed by a later ungraded inspection
Ofsted's most recent (ungraded) visit confirmed the school remains Outstanding. Ungraded inspections do not award a new grade.
Inspected 20 April 2023
Read the Ofsted report ↗At a glance
130 pupils · 100% of 130 capacity
- School type
- Community special school
- Age range
- 4–11
- Gender
- Mixed
- Free school meals
- 26.2% of pupils
- English as additional language
- 16.3% of pupils
- SEN support
- 0% of pupils
- EHC plan
- 100% of pupils
- Website
- www.colnbrook.herts.sch.uk
- URN
- 117670
Key stage 2 results (2024/2025)
24 pupils at the end of key stage 2 in 2024/2025
no data
no data
Source: DfE performance tables 2024/2025. “Suppressed” means the DfE withholds figures for very small cohorts.
Attendance (2025/26 autumn term)
Autumn-term absence, DfE pupil absence data. Lower is better.
Staffing
Full-time-equivalent, 2025/26.
Teacher retention (2024/25)
68% of teachers stayed at the school the following year · 14% moved to another state school · 18% left the state-funded sector
School Workforce Census, DfE. The ratio counts full-time-equivalent qualified teachers; retention follows teachers in post one November to the next. Open Government Licence v3.0.
Spending per pupil
Total expenditure ÷ pupils, council-maintained school finance return (DfE Schools Financial Benchmarking, latest year). Higher spending is not a measure of quality. It often reflects greater pupil need or a smaller school. Open Government Licence v3.0.
Inspection history since 2015
- 19 April 2023: School remains Outstanding
- 7 March 2017: Yes - improving (outstanding)
Ofsted management information. Ungraded and monitoring visits do not award a new grade. How the two inspection systems work.