NUT: Teachers vote to strike over pay and workload
21 April 2014 Last updated at 14:16 BST
The National Union of Teachers' conference has voted for a one-day strike in England and Wales in the week beginning on 23 June, unless progress is made in further talks.
The union's conference in Brighton has also decided to consult teachers on further action in the autumn term.
The strikes are part of a long-running campaign over teachers' pay and workload.
Reeta Chakrabarti reports.