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Average Size of One Teacher Classes, Maintained Schools 
| Primary | Secondary | |||||
| 1997 | 2007 | Difference | 1997 | 2007 | Difference | |
| East Midlands Region | 27.8 | 26.1 | -1.7 | 21.6 | 21.3 | -0.3 |
| East of England Region | 26.9 | 26.1 | -0.8 | 21.3 | 21.3 | 0.0 |
| London Region | 27 | 26.8 | -0.2 | 21.9 | 21.2 | -0.7 |
| North East Region | 27.2 | 25 | -2.2 | 22 | 20.9 | -1.1 |
| North West Region | 27.9 | 26.1 | -1.8 | 21.8 | 21.1 | -0.7 |
| South East Region | 27.5 | 26.6 | -0.9 | 21.3 | 21.4 | 0.1 |
| South West Region | 27.5 | 26.1 | -1.4 | 21.7 | 21.4 | -0.3 |
| West Midlands Region | 27.4 | 26.1 | -1.3 | 22 | 21.1 | -0.9 |
| Yorkshire and The Humber Region | 27.9 | 26.3 | -1.6 | 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.