noun
school age
Refers to the age at which a child is eligible to attend school, often used in legal or administrative contexts.
学齢に達した子どもは、小学校に入学する義務がある。
Children who have reached school age are required to enter elementary school.
Compound of 学 (learning) and 齢 (age). The exact historical derivation is uncertain, but the term has been used in modern Japanese to denote the legal age for school attendance.