September 14-Friday Twelfth class day; this is the date the official enrollment count is taken.Payment for added classes (add bill) due by 5:00 pm.Last day an undergraduate student may add a class except for rare and extenuating circumstances.Last day to drop a class for a possible refund. (SeeGeneral Information, chapter 4, for details.)Last day a graduate student may, with the required approvals, add a class.Last day a law student may add or drop a course without the approval of the dean.