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Average Size of One Teacher Classes, Maintained Schools 
| Primary | Secondary | |||||
| 1997 | 2007 | Difference | 1997 | 2007 | Difference | |
| Blackburn with Darwen LA | .. | 26.9 | .. | .. | 21.7 | .. |
| Blackpool LA | .. | 27.4 | .. | .. | 22.1 | .. |
| Bolton LA | 28.9 | 27.5 | -1.4 | 22.1 | 20.6 | -1.5 |
| Bury LA | 28.3 | 26.1 | -2.2 | 23.1 | 22.2 | -0.9 |
| Cheshire LA | 27.5 | 25.5 | -2.0 | 21.3 | 20.6 | -0.7 |
| Cumbria LA | 26.3 | 24.3 | -2.0 | 21.2 | 20.7 | -0.5 |
| Halton LA | .. | 24.5 | .. | .. | 21.4 | .. |
| Knowsley LA | 27.7 | 26.1 | -1.6 | 22.1 | 20.5 | -1.6 |
| Lancashire LA | 28.8 | 26.3 | -2.5 | 22.5 | 21.5 | -1.0 |
| Liverpool LA | 26.8 | 24.8 | -2.0 | 21.1 | 20 | -1.1 |
| Manchester LA | 27.2 | 27 | -0.2 | 22.4 | 21.9 | -0.5 |
| Oldham LA | 29.3 | 27.4 | -1.9 | 22.2 | 20.9 | -1.3 |
| Rochdale LA | 29.6 | 27 | -2.6 | 22.8 | 22.4 | -0.4 |
| Salford LA | 27.3 | 25.8 | -1.5 | 22.1 | 22 | -0.1 |
| Sefton LA | 27.6 | 25.4 | -2.2 | 21.1 | 20.5 | -0.6 |
| St Helens LA | 27.8 | 27.2 | -0.6 | 19.9 | 20.4 | 0.5 |
| Stockport LA | 27.8 | 25.8 | -2.0 | 23.1 | 23.1 | 0.0 |
| Tameside LA | 29.3 | 26.1 | -3.2 | 23 | 22.7 | -0.3 |
| Trafford LA | 28.9 | 27.1 | -1.8 | 21.7 | 21.3 | -0.4 |
| Warrington LA | .. | 25.6 | .. | .. | 20.7 | .. |
| Wigan LA | 28.5 | 26.6 | -1.9 | 21.5 | 21.2 | -0.3 |
| Wirral LA | 26.3 | 25.4 | -0.9 | 20.5 | 19.9 | -0.6 |
| North West Region | 27.9 | 26.1 | -1.8 | 21.8 | 21.1 | -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.