Note that although we refer to seasonal academic quarters for reference, UCSC Extension doesn't schedule courses on a strict quarter system. Courses may begin in any week during the quarter.
- Fall Quarter: Sept. 1—Dec. 31 | Courses are open for enrollment by June 16.
- Winter Quarter: Jan. 1—March 31 | Courses are open for enrollment by Sept. 1
- Spring Quarter: April 1—June 15 | Courses are open for enrollment by Jan. 1.
- Summer Quarter: June 16 —Aug. 31 | Courses are open for enrollment by April 1.