ˈschool age BrE AmE noun [uncountable]
the age at which a child is old enough to go to school:
children below school age
—school-age adjective :
a school-age child
ˈschool age BrE AmE noun [uncountable]
the age at which a child is old enough to go to school:
children below school age
—school-age adjective :
a school-age child
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012