Gardai are investigating a break-in at Scoil Mhuire na nAird in Shillelagh.
The discovery was made this morning as students returned to school after the week-end break.
The raiders ransacked the school causing damage to to ceilings, windows and the office.
A number of laptops were also stolen.
Members of the public are asked to contact the Gardai of they noticed any activity around the school over the week-end.