The university's firm policy is that a student's registration will be cancelled prior to the beginning of a semester if she or he has one or more financial obligations (including overdue library books, parking tickets, etc.) that total $100.00 or more; deregistration will occur even if you have paid the tuition and fees for the semester. You will have to register again for all classes after paying your debt. If you pay your debt by check, you can reregister only after the check has cleared.