The official add/drop period is officially over! You do have until the 12th class day, September 9, to drop a course and have it deleted from your record. After September 9, any class you drop will show up as a Q on your record. You are limited to 6 Q-drops while at UT, so it is best to save your Q for an emergency situation. You cannot Q-drop a course after Nov. 1.
When dropping courses, please keep in mind that you must be registered for 12 hours to be a full-time student.