児童は英語で
pupil

英語の定義

児童
1. n. pupil, student (a child who goes to elementary school)
2. n. (legal) child, juvenile, person(s) under 18 years of age under the Japanese Child Welfare Law

schoolchild
1. n. A young person attending school or of an age to attend school.

pupil
1. n. A learner under the supervision of a teacher or professor.
2. n. (legal, obsolete) An orphan who is a minor and under the protection of the state.
3. n. (anatomy) The hole in the middle of the iris of the eye, through which light passes to be focused on the retina.
4. n. (zoology) The central dark part of an ocellated spot.