A child who stays away from school without any good reason

Solution (By Examveda Team)

One word substitute is Truant.

Vagabond: a person who wanders from place to place without a home or job.
Delinquent: (typically of a young person) tending to commit crime, particularly minor crime.
Schizophrenic: having, relating to, or characteristic of schizophrenia.
Truant: a pupil who stays away from school without leave or explanation.