noun
school child; school-age child
Refers to a child of compulsory school age, typically elementary or junior high school age, often used in official or educational contexts.
この地域の就学児童数は年々減少している。
The number of school-age children in this area is decreasing year by year.
児童 is a general term for 'child' or 'juvenile', while 就学児童 specifically refers to children who are of school age and expected to attend school.
学童 also means 'school child', but is more commonly used in contexts like after-school care (学童保育). 就学児童 is more formal and emphasizes the school-attendance aspect.
Compound of 就学 (school attendance) and 児童 (child). The exact historical derivation is uncertain, but the term is conventionally used in educational administration.