I skip 1 class almost every day it meets. I'll go to show my ace on occasion, but I'll leave after 30 minutes. I don't like the prof, and besides, I had a friend who took the class with the same prof, tape recorded all the classes, transcribed the notes, and is letting me borrow her notes and book. I've aced both tests so far just by reading her notes, rarely going to class, and I do, not paying attention. I love it.
I'm skipping a class tomorrow morning to study for an exam I have later in the day.