A lesson, class, or lecture; instruction given in school or courses, and the class activities themselves.
明日の授業は午後1時から始まります。
Tomorrow's class starts at 1:00 PM.
その先生の授業はとてもわかりやすいと評判だ。
That teacher's classes have a reputation for being very easy to understand.
授業に遅刻すると出席に影響することがある。
Being late for class can affect your attendance record.