The add/drop period begins on the first day of classes and ends at the close of business (4PM) on the tenth business day of classes of the fall or spring semester, the fifth business day of classes of six-week summer sessions, or the third business day of classes of three-week winter sessions. Many courses require students to have permission to register after the course has closed or after the start of classes. Permission requirements for individual courses are noted in the online Class Schedule. See the section "Closed Courses and Courses Requiring Permission" below.
Students may drop most courses through the SOLAR System. Some courses require permission to drop; these are noted in the online Class Schedule. In addition, some freshman-level courses in mathematics, chemistry, and physics have an extended add/drop period, usually after students have been notified of the results of the first exam, which allows students to drop to a less advanced level course.
See the entries "Course Load and Course Withdrawal" and "Withdrawal from the University" in this Bulletin for more information on dropping and withdrawing from individual courses and withdrawing from all courses (withdrawing from the University).
After the end of the add/drop period, students may only add a course following procedures, established by the appropriate faculty Committee on Academic Standing and Appeals (CASA), for petitioning for an exception to the deadline, described in "Petitioning for Exceptions" later in this chapter. Students may drop a course after the end of the add/drop period, but full-time students (those registered for 12 or more credits) must maintain at least 12 registered credits during the fall and spring semesters. A grade of "W" (withdrawal) will be recorded on the transcript when a course is dropped after the end of the add/drop period. (See "Course Load and Course Withdrawal") Students granted permission to make changes in registration after deadlines stated in the academic calendar will be assessed a petition fee.