N-VAR 自习室; 自习课A study hall is a room where students can study during free time between classes, or a period of time during which such study takes place. 自习室; 自习课 [US]
Children are hard at work in the study hall.
孩子们在自习室里刻苦学习。
She'd go to the library during ninth period, when she had study hall.