@caparent2 My son is 2nd year at UCD and would like to echo @islandmama1 re: the faves and am also positive re: UCD.
Additionally, off campus housing is abundant & affordable, so my son was able to get a 4 BD/2 BA place with 3 friends in mid-to-late Feb. UCD has a Parent & Family Council that holds vitual coffee chats monthly, parent pop ups around CA and at UCD, that are really helpful.
I had posted this re: our UCD campus visit after Aggie Day Open House April 2024 - https://talk.collegeconfidential.com/t/uc-davis-campus-visits-share-your-tips-recommendations/3630120/3?u=pathandpurpose . Caveat that there has been turnover in both the Chair of Dept and Undergraduate Advising since then.
Best of luck to your kid HS ‘26!