An Irish National Teachers' Organisation Survey shows there are 951 vacant posts nationwide.
Schools are increasingly asking unqualified or teachers who aren't registered with the Teaching Council to cover some absences.
The INTO has described it as an enormous crisis.
Wildfire Battle Continues in France & Spain with Thousands of Holidays Cut Short
Wicklow Businesses Are Staying Competitive with Skills Training
Joy Unconfined As Wicklow Town's Shrine To Mayo Bears Fruit At Long Last!
Wicklow Households Among 1.7 Million Impacted By Uisce Éireann's Bank Holiday Repair Plan
Early Hours Rescue Brings Three People To Safety