Prime Minister Sunak on Wednesday told parliament the government had given teachers the "highest pay rise in 30 years" including nine percent for newly qualified teachers.
He urged opposition Labour Party leader Keir Starmer to say "that the strikes are wrong and we should be backing our school children"
The latest official data shows 1.6 million working days were lost from June-November last year because of strikes -- the highest six-month total in more than three decades -- according to the Office for National Statistics (ONS).
A total of 467,000 working days were lost to walkouts in November alone, the highest level since 2011, the ONS added.