non-enrollment in compulsory education
Refers to children who are not enrolled in elementary or junior high school despite being of compulsory school age. Often used in discussions of educational policy, truancy, or social issues.
The increase in children not attending compulsory school has become a problem.
A survey on the actual state of non-enrollment was conducted.
未就学 refers to preschool-age children who have not yet entered school, whereas 不就学 implies a failure to enroll despite being of school age.
Compound of 不 (not) + 就学 (entering school). The term is used in modern educational administration and social welfare contexts.