What is the average primary school class size in Kensington and Chelsea?

The average primary school class size in Kensington and Chelsea is 24.9 pupils per class in the 2025/26 academic year. The England average is 26.2 — so Kensington and Chelsea primary classes are smaller than average (a resource advantage). This covers 5,519 pupils in 222 classes across state-funded primary schools. Source: DfE 2025/26, OGL v3.0.

What is the average secondary school class size in Kensington and Chelsea?

Secondary school classes in Kensington and Chelsea average 22.7 pupils per class (England average: 22.6) in 2025/26. Classes are larger than the England average. This covers 5,724 pupils in 252 classes. Source: DfE 2025/26, OGL v3.0.

Why do class sizes vary so much between local authorities?

Class sizes depend on local demographic trends (birth rate fluctuations), number of available schools and teachers, local authority budget decisions, and whether schools operate under- or over-capacity. Rural areas like Westmorland and Furness (GSRI 114.0) often have smaller schools with naturally smaller classes. Urban authorities with rapid population growth tend towards larger classes. Class sizes in England are regulated by the infant class size legislation (30-pupil limit for Key Stage 1) but secondary classes have no statutory cap. Real DfE data, OGL v3.0.

How is the Gera School Resource Index calculated?

The Gera School Resource Index uses two real DfE figures: average primary class size and average secondary class size, both for 2025/26. For each LA: pScore = round((England_primary_avg ÷ LA_primary) × 100, 1); sScore = round((England_secondary_avg ÷ LA_secondary) × 100, 1); GSRI = round((pScore + sScore) ÷ 2, 1). England averages are 26.2 (primary) and 22.6 (secondary), both pupil-weighted across all published LAs. Full methodology at https://geralearn.com/school-resource-index/methodology.

GeraLearn / School Resource Index / Kensington and Chelsea

Kensington and Chelsea School Class Sizes 2025/26

State-funded primary schools in Kensington and Chelsea average 24.9 pupils per class — smaller than the England average of 26.2. Secondary: 22.7 pupils/class. Real DfE 2025/26 data (OGL v3.0).

How large are school classes in Kensington and Chelsea, and how does this compare to the England average?

In the 2025/26 academic year, state-funded primary schools in Kensington and Chelsea have an average class size of 24.9 pupils — 1.3 pupils below the England average of 26.2. Secondary schools average 22.7 (England: 22.6). Gera School Resource Index for Kensington and Chelsea: 102.5 / 100 (England mean 100). Source: DfE 2025/26 (OGL v3.0).

Source:DfE — Schools, pupils and their characteristics, Academic year 2025/26·As of Academic year 2025/26 · updated annual · last refreshed 20 June 2026

Gera School Resource Index

Kensington and Chelsea ranks #41 of 151 local authorities (England mean = 100). A score above 100 means smaller-than-average classes (more teacher time per pupil); below 100 means larger-than-average classes. Computed from real DfE 2025/26 class-size figures — see methodology.

How this is calculated

102.5

Kensington and Chelsea vs England — class sizes 2025/26

Measure	Kensington and Chelsea	England	Difference
Average primary class size	24.9	26.2	1.3 below ✓
Average secondary class size	22.7	22.6	0.1 above
Primary pupils (total)	5,519	—	—
Secondary pupils (total)	5,724	—	—
Gera School Resource Index	102.5	100 (mean)	Rank #41/151

Data: DfE state-funded schools, 2025/26 academic year. Primary: 222 classes. Secondary: 252 classes. Licensed OGL v3.0.

Check school class sizes for your area

Pick a local authority. We show the real DfE 2025/26 average primary and secondary class sizes, how they compare to England, and the Gera School Resource Index — computed from published data.

Local authority

Primary schools

Avg class size: 24.9 (England 26.2)

1.3 below England average.

5,519 pupils · 222 classes

Secondary schools

Avg class size: 22.7 (England 22.6)

0.1 above England average.

5,724 pupils · 252 classes

Gera School Resource Index

102.5

England mean 100 · ranked #41 of 151 LAs

Smaller than average classes → more resource per pupil

Find courses that fit any class size — browse GeraLearn free

Find courses designed for Kensington and Chelsea learners

Smaller classes mean more teacher time — but independent learning skills matter everywhere. Explore free and paid courses on GeraLearn that work alongside any class size.

Browse GeraLearn courses — free to start

Kensington and Chelsea school class sizes — FAQ

What is the average primary school class size in Kensington and Chelsea?: The average primary school class size in Kensington and Chelsea is 24.9 pupils per class in the 2025/26 academic year. The England average is 26.2 — so Kensington and Chelsea primary classes are smaller than average (a resource advantage). This covers 5,519 pupils in 222 classes across state-funded primary schools. Source: DfE 2025/26, OGL v3.0.
What is the average secondary school class size in Kensington and Chelsea?: Secondary school classes in Kensington and Chelsea average 22.7 pupils per class (England average: 22.6) in 2025/26. Classes are larger than the England average. This covers 5,724 pupils in 252 classes. Source: DfE 2025/26, OGL v3.0.
What is the Gera School Resource Index for Kensington and Chelsea?: The Gera School Resource Index for Kensington and Chelsea is 102.5 — ranked #41 of 151 local authorities published. The index is centred at 100 (England mean). A score above 100 means smaller classes (more resource per pupil); below 100 means larger classes than the England average. The GSRI is computed from the real DfE 2025/26 class-size figures — see the methodology page for the exact formula.
Why do class sizes vary so much between local authorities?: Class sizes depend on local demographic trends (birth rate fluctuations), number of available schools and teachers, local authority budget decisions, and whether schools operate under- or over-capacity. Rural areas like Westmorland and Furness (GSRI 114.0) often have smaller schools with naturally smaller classes. Urban authorities with rapid population growth tend towards larger classes. Class sizes in England are regulated by the infant class size legislation (30-pupil limit for Key Stage 1) but secondary classes have no statutory cap. Real DfE data, OGL v3.0.
How is the Gera School Resource Index calculated?: The Gera School Resource Index uses two real DfE figures: average primary class size and average secondary class size, both for 2025/26. For each LA: pScore = round((England_primary_avg ÷ LA_primary) × 100, 1); sScore = round((England_secondary_avg ÷ LA_secondary) × 100, 1); GSRI = round((pScore + sScore) ÷ 2, 1). England averages are 26.2 (primary) and 22.6 (secondary), both pupil-weighted across all published LAs. Full methodology at https://geralearn.com/school-resource-index/methodology.

How the Gera School Resource Index is calculated for Kensington and Chelsea

The GSRI compares each local authority's average class sizes to the England pupil-weighted average, then averages the two ratios.

pScore = round((26.16 ÷ 24.86) × 100, 1) = 105.2

sScore = round((22.64 ÷ 22.71) × 100, 1) = 99.7

GSRI = round((105.2 + 99.7) ÷ 2, 1) = 102.5

A GSRI of 102.5 means Kensington and Chelsea has smaller-than-average classes — more direct teacher time per pupil than the England mean. Full methodology →

School class sizes in other London local authorities

See all 151 local authorities ranked by the Gera School Resource Index →

Source: DfE — Schools, pupils and their characteristics, Academic year 2025/26. Figures are for state-funded schools, 2025/26 academic year. Licensed under the Open Government Licence v3.0 (OGL v3.0). The Gera School Resource Index for Kensington and Chelsea is computed by GeraLearn from these figures; no number is modelled, interpolated or estimated.