Average class size. Gen eds are usually the largest classes while major and upper level classes are smaller. Small classes can be good since you get to know the prof and they you. I’ve known of profs who have invited a class over for dinner. Now if you like to sleep in instead of going to class, the prof knows that you are not there. Some profs include class attendance as part of their grade. One of my kids went to class sick. The prof looked at her and sent her back to the dorm and told her to rest and not go to class unless she felt better.