part-time school system; evening school system
Refers to a school system (usually high school) where classes are held in the evening or at other fixed times for students who work during the day. Often contrasted with 全日制 (full-time) and 通信制 (correspondence).
He works during the day and attends a part-time high school at night.
In the part-time course, you can study at your own pace.
He works during the day while attending an evening part-time school.
She got a job after graduating from a part-time evening school.