http://admission.universityofcalifornia.edu/freshman/requirements/examination-requirement/
As for his chances, that will depend on the UC. Off the top of my head: UCLA and UCB will be reaches. UCSB/UCSD high matches or low reaches. UCD/UCI I would consider matches. UCR and UCM would be safeties.
@typiCAmom The UC GPA is the GPA calculated by the University of California for admissions. It is how they are able to compare GPAs between applicants from different high schools (since most high schools calculate GPA different from one another) http://admission.universityofcalifornia.edu/counselors/q-and-a/calculating-gpa/