UC San Diego — along with every other University of California System institution, all of the California State University System, community colleges and private colleges — does not allow marijuana on university grounds or in campus buildings.
Links
[1] https://www.pe.com/2018/01/08/despite-legalization-california-colleges-stick-to-their-marijuana-bans/
[2] http://www.rethinkpot.org/tags/college
[3] http://www.rethinkpot.org/tags/california