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Average Size of One Teacher Classes, Maintained Schools 
| Primary | Secondary | |||||
| 1997 | 2007 | Difference | 1997 | 2007 | Difference | |
| Barking and Dagenham LA | 27 | 26.8 | -0.2 | 20.8 | 20.9 | 0.1 |
| Barnet LA | 26.2 | 27.2 | 1.0 | 19.8 | 19.8 | 0.0 |
| Bexley LA | 28.8 | 27.6 | -1.2 | 21.8 | 22.1 | 0.3 |
| Brent LA | 26.5 | 27.4 | 0.9 | 20.5 | 20.6 | 0.1 |
| Bromley LA | 28.5 | 27.1 | -1.4 | 20.4 | 20.5 | 0.1 |
| Camden LA | 27.1 | 26.9 | -0.2 | 20.3 | 20.1 | -0.2 |
| City of London LA | 26 | 22.2 | -3.8 | 0 | . | . |
| Croydon LA | 28.3 | 27.5 | -0.8 | 22.2 | 21.8 | -0.4 |
| Ealing LA | 27.1 | 27.5 | 0.4 | 22.4 | 21.7 | -0.7 |
| Enfield LA | 29.1 | 28.3 | -0.8 | 20.7 | 20.7 | 0.0 |
| Greenwich LA | 26 | 26.2 | 0.2 | 22.5 | 20.5 | -2.0 |
| Hackney LA | 26.1 | 26.3 | 0.2 | 22.3 | 21.5 | -0.8 |
| Hammersmith and Fulham LA | 25.3 | 26.2 | 0.9 | 22.6 | 21.4 | -1.2 |
| Haringey LA | 26.9 | 27.5 | 0.6 | 21.6 | 20.8 | -0.8 |
| Harrow LA | 27.5 | 26.3 | -1.2 | 22.9 | 22.4 | -0.5 |
| Havering LA | 27.9 | 26.8 | -1.1 | 21.8 | 21.6 | -0.2 |
| Hillingdon LA | 27.2 | 26.6 | -0.6 | 21.1 | 19.6 | -1.5 |
| Hounslow LA | 26.8 | 27 | 0.2 | 21.1 | 20.7 | -0.4 |
| Islington LA | 26.6 | 25.7 | -0.9 | 24 | 22.3 | -1.7 |
| Kensington and Chelsea LA | 25.3 | 26.2 | 0.9 | 20.2 | 22.2 | 2.0 |
| Kingston upon Thames LA | 29.4 | 27.1 | -2.3 | 20.2 | 21.2 | 1.0 |
| Lambeth LA | 25.2 | 25.9 | 0.7 | 21.9 | 21.7 | -0.2 |
| Lewisham LA | 26.1 | 25.8 | -0.3 | 20.7 | 21.9 | 1.2 |
| Merton LA | 27.3 | 26.4 | -0.9 | 22.7 | 24 | 1.3 |
| Newham LA | 27.9 | 26.7 | -1.2 | 24.5 | 23.4 | -1.1 |
| Redbridge LA | 28.4 | 29 | 0.6 | 21 | 20.5 | -0.5 |
| Richmond upon Thames LA | 27.2 | 26.8 | -0.4 | 24 | 23.2 | -0.8 |
| Southwark LA | 26.4 | 24.9 | -1.5 | 24.4 | 21.1 | -3.3 |
| Sutton LA | 28.1 | 27.7 | -0.4 | 20.7 | 20.5 | -0.2 |
| Tower Hamlets LA | 26.2 | 26.3 | 0.1 | 24 | 21.3 | -2.7 |
| Waltham Forest LA | 26.6 | 27.4 | 0.8 | 23.6 | 22.3 | -1.3 |
| Wandsworth LA | 25.8 | 25.6 | -0.2 | 22 | 21.5 | -0.5 |
| Westminster LA | 24.2 | 25.5 | 1.3 | 21.5 | 20.8 | -0.7 |
| London Region | 27 | 26.8 | -0.2 | 21.9 | 21.2 | -0.7 |
| England | 27.5 | 26.2 | -1.3 | 21.7 | 21.2 | -0.5 |
The average size of classes taught by one teacher in Maintained Primary Schools in 2007 was 26.2 down from 27.5 in 1997.
In Maintained Secondary Schools the average size of classes taught by one teacher in 2007 21.2 down from 21.7 in 1997.