classmate
fellow student
grade schooler
high schooler
infant
intermediate schooler
nursery school child
prep schooler
preschool child
preschooler
primary schooler
school child
school kid
school lad
schoolboy
schoolfellow
schoolgirl
schoolmate
secondary schooler
child
fry
kid
minor
nestling
nipper
shaver
small fry
tiddler
tike
tyke
youngster