Schools face strikes in the run up to this summer's exams after teachers overwhelmingly rejected the Government's latest pay offer.
Members of the National Education Union (NEU) voted by 98% to dismiss the "unacceptable" wage deal as anger boiled over among school staff at squeezed pay and spiralling workloads.
Some 191,319 members out of the 195,564 who took part in the consultative ballot chose to reject the Government's offer of a £1,000 one-off payment for the current school year and a 4.5% rise for most teachers next year.