
in general you need to go to class at least once in the first week so the teacher can mark you down for the census! otherwise you'll get removed from the class. but missing one class isn't going to hurt you and it being on the first day is probably the best day to miss since it's just syllabus info. the teacher doesn't know any of you yet and probably won't even notice you weren't there when you come to class next time
Depends on ur school size most lecture based schools with 100+ students per class ur good as long as u don’t miss any assignments But for attendance classes with 25/30 students per class ur can only miss a certain amount of days before u get kicked out that class or financial aid gets cut