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 21,995* 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
ANR 2
Berkeley 3576
Davis 2330
Irvine 1834
Los Angeles 2736
Merced 528
Riverside 1668
San Diego 3427
Santa Barbara 1622
Santa Cruz 1652
Total 19375

*FTP Data, April 2021