i took my course this past summer and a one or two people in my class (of about 26) had already taken the course but let the time run out before they tested. So he would sit in class, listen to music, during the labs he wouldnt want to do anything, refused to be keded and backboarded simply becuase he had already done it while the rest of us needed/wanted the practice.
Hmmm...he would have failed for lack of participation. A course is more than simply showing up and taking a test here and there.