Russell Hobby from the National Association of Head Teachers said the "lack of planning is frustrating" when it comes to school places.
Speaking to Daybreak he said: "You should be able to predict this, when more children are born, four years later you need more school places."
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One of the attackers who murdered a priest in a French church during morning mass in Normandy has been named by prosecutors.
Father Jacques Hamel has been described as man who dedicated his life to his parishioners and still regularly led mass, even at 86.
Rain will spread southeastwards through N. Ireland, Wales and England overnight.