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England > East of England Region > Hertfordshire LA
Average Size of One Teacher Classes, Maintained Schools 
| Primary | Secondary | |||||
| 1997 | 2007 | Difference | 1997 | 2007 | Difference | |
| Broxbourne Constituency | 27.9 | 27 | -0.9 | 20.1 | 21.6 | 1.5 |
| Hemel Hempstead Constituency | 27.6 | 26 | -1.6 | 19.9 | 20.3 | 0.4 |
| Hertford and Stortford Constituency | 26.7 | 26.7 | 0.0 | 19.6 | 19.5 | -0.1 |
| Hertsmere Constituency | 27.9 | 27.3 | -0.6 | 20.3 | 19.3 | -1.0 |
| Hitchin and Harpenden Constituency | 26.3 | 26.7 | 0.4 | 21.2 | 20.3 | -0.9 |
| North East Hertfordshire Constituency | 25.1 | 25.1 | 0.0 | 19.3 | 20.1 | 0.8 |
| South West Hertfordshire Constituency | 26.9 | 26.5 | -0.4 | 20.4 | 20.3 | -0.1 |
| St. Albans Constituency | 27.6 | 27.7 | 0.1 | 20.5 | 20.4 | -0.1 |
| Stevenage Constituency | 27.1 | 26.3 | -0.8 | 20.5 | 20.2 | -0.3 |
| Watford Constituency | 27.6 | 27.2 | -0.4 | 20.8 | 21.4 | 0.6 |
| Welwyn Hatfield Constituency | 26.8 | 26.4 | -0.4 | 21.5 | 20.6 | -0.9 |
| Hertfordshire LA | 27.1 | 26.6 | -0.5 | 20.3 | 20.3 | 0.0 |
| East of England Region | 26.9 | 26.1 | -0.8 | 21.3 | 21.3 | 0.0 |
| 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.