Northern Ireland's top education official has accused teachers of harming children's education by taking industrial action.
In a strongly worded letter to all teachers, Gavin Boyd also said they got better pay than their counterparts in England and Wales.
Teaching unions are refusing to co-operate with school inspections in a dispute over pay and workload.
Some are also taking occasional strike action.
The National Association of Schoolmasters and Women Teachers (NASUWT) has reacted angrily to Mr Boyd's letter, accusing him of "fake…