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.
Enrollment schedule
| 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. |
International student application deadlines: If you're an international student, visit this page for F-1 visa deadlines.
Open Campus application deadlines: View the UC Santa Cruz schedule here.
UCSC Extension holiday schedule
The UC Santa Cruz Silicon Valley Campus is closed for the following holidays.
| Monday, Dec. 22–Sunday, Jan. 4, 2026 | Winter Closure |
| Monday, Jan. 19, 2026 | Martin Luther King, Jr. Day |
| Monday, Feb. 16, 2026 | Presidents' Day |
| Friday, March 27, 2026 | Cesar Chavez Day |
| Monday, May 25, 2026 | Memorial Day |
| Thursday, June 19, 2026 | Juneteenth |
| Friday, July 3, 2026 | Independence Day |
| Monday, Sept. 7, 2026 | Labor Day |
| Wednesday, Nov. 11, 2026 | Veterans Day |
| Thursday, Nov. 26–Friday, Nov. 27, 2026 | Thanksgiving Weekend |
| Thursday, Dec. 24, 2026–Sunday, Jan. 3, 2027 | Winter Closure |