A quarter of a million teachers in the NUT are being balloted for a campaign of discontinuous industrial action over a three-year below inflation pay offer.
The ballot, which closes on 3 November, would give the union leadership the ability to call further strikes without having to re-ballot of the membership.
It follows a well observed strike on April 24, which coincided with stoppages of civil servants, FE lecturers and Shelter charity workers.
Many workers had hoped to unite teachers' action with that of low paid teaching assistants, nursery nurses and clerical staff. These workers cannot join the NUT, and those that are members of the union are mostly in UNISON. However, UNISON's leadership called off their dispute before joint action could be a possibility.