Schooldays

A day during which the public schools are open, usually synonymous with weekday during the school year.

"In modern China, Sunday is not usually a schoolday except around major holidays."

The part of a day when students attend school.

"I couldn't contact my child during the schoolday because of the school's no-cellphone policy."

The period of one's life when one attends school, particularly, primary school (as opposed to college days); one's youth.

"I can hardly remember my schooldays now that I have reached middle age."