It was announced there would be a half-day strike and action short of a strike this month
Members of the Irish National Teachers' Organisation are starting industrial action over a pay dispute.
Before Christmas, it was reported the union would stage a half-day strike, and action short of a strike this month.
The group won't co-operate in school inspections by the Education and Training Inspectorate at this point in time.
The union has seven thousand members across Northern Ireland.
Woman dies in Cookstown road crash
Extra £400m to support health and education in Northern Ireland
Collaborative approach must remain in removing illegal flags – police federation
Ireland rugby star Jack Kyle to be commemorated with blue plaque
Police investigating South Belfast arson attack