Thousands of teachers are set to take part in a one-day strike in a continued row over pay, pensions and working conditions.
The walkout, which is taking place across four English regions, is expected to affect tens of thousands of schoolchildren.
It has been organised by two of England's biggest teaching unions - the National Union of Teachers (NUT) and the NASUWT.
Schools in 49 local authorities in the East of England, the East Midlands, West Midlands and Yorkshire and Humberside will be affected.
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