Course Letters and Numbers

The letters preceding a course number indicate the University of California campus at which there is an equivalent course: e.g., XR – Riverside, XL – Los Angeles, etc. The letter C following any of these designations (e.g. XRC) indicates a concurrent course (campus regular session course in which Extension students may concurrently enroll).

X alone, or XCal, indicates a course offered only through University Extension. Note, however, that X100 series courses are structured in accordance with requirements for campus upper-division-level courses.

A capital letter after a course number indicates the quarter portion of a course that continues through two or more successive quarters.

Courses are numbered as follows:

1-99 — Lower division (freshman and sophomore)

100-199 — Upper division (junior and senior)

200-299 — Graduate-level courses

300-399 — Courses for teachers in upper division or postgraduate standing, usually in education, designed to serve needs for professional upgrading, inservice education requirements, basic and specialized credentials.

400-499 — Postgraduate courses, usually in subject areas other than education, designed for professional and occupational upgrading and specialization.

800-899 — Noncredit programs providing opportunities to pursue intellectual, civic and cultural interests.