A ballot of school headteachers and senior leaders in the NAHT union has failed to meet the legal turnout threshold for strike action.
Overall 64 per cent of those who voted in the ballot in England supported strikes, while 87 per cent voted in favour of action short of a strike.
However, turnout was just 42 per cent, below the 50 per cent threshold needed to make industrial action legal.
It was the first time NAHT members in England had been balloted for national industrial action over pay in the union’s 125-year history.
