Teachers have warned there is “no basis” to suspend their industrial action over pay.
Employers want action short of strike called off claiming there is a “clear detrimental impact on schools and pupils”.
All main teaching unions withdrew cooperation with inspectors as part of action, which began in January.
They rejected a pay offer that would see staff receive no across-the-board pay rise for 2015/16, and a 1 per cent cost of living uplift for 2016/17.
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