Up to 200 students at a school in Balbriggan will be taking classes elsewhere this morning.
A section of the building at Ardgillan Community College was closed with immediate effect over the weekend after a fire safety assessment.
'Significant structural issues' were discovered by an engineer sent from the Dublin and Dun Laoghiare Education Training Board.
The Department of Education along with school management took the decision to close part of the school in the interests of the health and safety of the students.
