The Academic Student Employee Unit (BX) is a systemwide bargaining unit (except UCSF) comprised of graduate teaching assistants, readers, tutors and other instructional assistants who work in support of faculty and lecturers. Currently, the unit includes approximately 19,655* graduate students and is represented by the United Auto Workers (UAW) Local 2865.

An approximate breakdown of the number of BX represented graduate students at each location (except UCSF) is as follows:

Location Headcount
Berkeley 3756
Davis 2376
Irvine 1664
Los Angeles 2688
Merced 526
Riverside 1650
San Diego 3690
San Francisco 1
Santa Barbara 1576
Santa Cruz 1728
Total 19655

*FTP Data, April 2022