SJSU and CPP are more transparent about their prior year thresholds for each major (of course, the thresholds can change each year, since they are determined competitively).
https://www.cpp.edu/admissions/freshmen/freshman-student-profile.shtml
GPA for CSU is calculated as described at GPA Calculator | CSU . It should be the same as the UC weighted capped GPA if the student has not taken any college courses while in high school.