The NUT, in a joint campaign with the Nasuwt, has already announced a series of local strikes in the summer term, followed by a one-day national strike in the autumn.

BBC: Teachers vow to press on with strike plan

Jane Nellist, joint secretary of the Coventry Association of the NUT, said members were unhappy about the plans.

BBC: Coventry teachers strike over schools' academy plans

The NUT and the NASUWT have already announced joint strike plans over pay, pensions and workload.

BBC: Teachers' unions gather in angry mood