Headteachers may refuse to fire teachers at schools in protest against a “funding crisis”, a conference heard.
Delegates at the National Association of Headteachers’ (NAHT) annual conference in Telford voted to “explore options” to challenge the status quo on funding, “up to and including industrial action”.
Heads could refuse to make any school staff redundant or reduce the terms and conditions of staff in order to balance the budget, the motion said.
The NAHT also vowed to “step-up our campaign to reverse funding cuts and invest greater effort and resources into our campaigning work”.
Chris Knowles, a head teacher from North Yorkshire, told the conference he had already made every possible cut back at school, even replacing blu tac with a cheaper “blue slime”.
He added: “I am ashamed of that fact that we are having to make redundancies at school. We have all got to stand up and fight for our colleagues and the children that they serve so well.”
A report last month by the social mobility charity the Sutton Trust, found that some schools are spending money set aside for their poorest pupils to pay teacher salaries.
More than a quarter (27 per cent) of secondary school head teachers and 22 per cent of primary heads admitted using their pupil premium fund to “plug gaps” in their budget, according to a poll of teachers.