International School of London

Independent school · All-through, ages 3 to 18 · Mixed · Nursery class · Sixth form

139 Gunnersbury Avenue, London, W3 8LG

020 8992 5823 · School website · Map and directions

OfstedGoodInspected 22 November 2023
Pupils298Room for 600 Pupil numbers in January of each year: 465 in 2019, 392 in 2021, 387 in 2022, 418 in 2023, 435 in 2024, 397 in 2025. Across England, secondary state school pupil numbers were up 10% from 2019 to 2025.

Ofsted inspection

Ofsted rated this school Good at the inspection that started on 22 November 2023.

This inspection used Ofsted's older format with four grades: Outstanding, Good, Requires improvement and Inadequate. Newer inspections use report cards. What changed.

AreaGrade
Quality of educationGood
Behaviour and attitudesGood
Personal developmentGood
Leadership and managementGood
Early yearsGood
Sixth formGood
SafeguardingEffective

At its last standard inspection the school met all of the independent school standards, the legal requirements every independent school must meet.

Read the full Ofsted reports for this school

Source: Ofsted non-association independent schools inspection data.

What parents say

107 parents answered Ofsted's Parent View survey between 4 September 2023 and 2 September 2024.

StatementThis schoolEngland
My child is happy at this school 92% 88%
My child feels safe at this school 93% 90%
The school makes sure pupils are well behaved 89% 84%
Bullying was dealt with quickly and effectivelyOf 33 parents whose child had been bullied 45% 49%
Concerns were dealt with properlyOf 78 parents who had raised a concern 78% 75%
I would recommend this school to another parent 81%said yes 84%

Parents choose whether to take part, so these answers may not represent all families. Figures are the share who agree or strongly agree. England figures are all parents answering the same questions over the same period, for state-funded schools. The scales run from lower (left) to higher (right) agreement, and the dot marks this school among state schools of the same phase that used the same survey questions. The third it falls in is coloured: green for the top third, amber the middle, red the bottom. This survey used Ofsted's previous Parent View questions, which changed in November 2025. Source: Ofsted Parent View management information.

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Results

We don't show GCSE or primary results for independent schools. DfE's tables often leave out the IGCSEs and other qualifications many independent schools use, so their published figures can look far lower than pupils' real results. DfE has published no A level results for this school. Ask the school for its results.

Admissions

Independent schools run their own admissions and set their own fees. Contact the school directly.

Pupils, staff and SEND

PupilsThis schoolHounslowEngland
Eligible for free school meals in the last 6 years 0.0% 30.1%* 28.9%
With an education, health and care plan 0.3% 2.8%* 3.1%
Receiving special educational needs support 22.7% 12.6%* 13.4%
English as an additional language Not published 51.2%* 19.2%

Comparisons are with secondary schools. Scales run from lower (left) to higher (right) figures. For absence and suspensions lower is better, so their scales run green to red; blue scales describe the school's pupils and staff and aren't good or bad. * Calculated by SchoolScores from the council's or England's schools, weighted by pupils (or teachers, for turnover); other figures are published by DfE. Sources: DfE school census 2024/25.

Nearby secondary schools

Straight-line distance. Distance isn't the same as a catchment area.

Questions parents ask

What is International School of London's Ofsted rating?

International School of London was rated Good by Ofsted at its inspection in 22 November 2023.

Would parents recommend International School of London?

81% of the 107 parents who answered Ofsted's Parent View survey between 4 September 2023 and 2 September 2024 said they would recommend International School of London to another parent. Parents choose whether to respond, so this may not represent all families.

Sources

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Page updated 26 September 2026.