[Maxful]

Hi, I have a couple of questions regarding the following phrases.

First of all, I would like to know if "学課" would have been a better choice of word instead of "授業" for number 1.

Secondly, what I don't understand is that why was "授業" used instead of "教室"?



１．前回の授業を復習する
review a previous lesson

２．授業で習ったことを復習する
review the things that one has learned in class