I came across this info on reddit. Here’s the data for 2018. Middle 25-75%
UCLA
High School GPA: 4.16 - 4.31
ACT Composite Score: 31 - 35
ACT English Language Arts: 29 - 32
SAT Evidence Based Reading & Writing: 670 - 750
SAT Mathematics: 690 - 790
SAT Essay: 16 - 20
For comparison:
UC Berkeley
High School GPA: 4.16 - 4.30
ACT Composite Score: 30 - 35
ACT English Language Arts: 28 - 32
SAT Evidence Based Reading & Writing: 660 - 750
SAT Mathematics: 680 - 790
SAT Essay: 16 - 20
UC San Diego
High School GPA: 4.02 - 4.28
ACT Composite Score: 28 - 34
ACT English Language Arts: 27 - 31
SAT Evidence Based Reading & Writing: 640 - 730
SAT Mathematics: 660 - 790
SAT Essay: 16 - 18
Sources:
UCLA: http://admission.universityofcalifornia.edu/campuses/ucla/freshman-profile/index.html
Berkeley: http://admission.universityofcalifornia.edu/campuses/berkeley/freshman-profile/index.html
The rest can be found by navigating this page, clicking a campus on the side bar, and then clicking “freshman admission profile” in the drop menu.
http://admission.universityofcalifornia.edu/campuses/index.html