They have people that go into the classes to check up and make sure the players are in class, atleast LSU does. And who didn't skip a class every now and then in college? I know I didn't have perfect attendance, especially in general ed/elective classes.
But, OU's policy is a warning after missing three classes, a suspension from practice for missing one after the warning, then suspension from a game after missing again after the practice suspension. (Clear as mud?) So, AP has already missed 4 classes and this is what, two weeks into the semester? I don't know if they were all the same class, but if so, and classes only meet two or three days a week and this is early in the semester, there is a class he has barely been attending. Not a good sign.