A survey by the Employers' Organisation found annual turnover has risen by 3% to 12.8%.
During 2000, 46,000 full-time, permanent teachers changed jobs - of these 23,000 moved to other teaching posts and 7,000 retired.
The south-east and London had the higher turnover rates. The area of least activity was in Wales.
A spokeswoman said: 'The upward trend reflects the relatively buoyant labour market, where teachers have increased opportunities not only within the education service but also outside the service.'