Schools which most need good staff are more likely to have a high turnover of teachers, according to new government research.
A study commissioned by the Department for Education and Skills found teachers moved to new jobs for various reasons, including promotion, a better salary, advancing their career, the attractions of the new school, and feeling undervalued or not liking the way their present school was run.
Personal circumstances and pupil behaviour in secondary schools also came into it.
Workload – the main reason for leaving the profession altogether – was not a significant factor, however.
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Overall turnover was not excessive, but ranged up to 200% in a year, said Professor Alan Smithers, who led the research.
The study covered hundreds of schools in England between 2002 and 2004.