I used the statistics found on Google from the Department of Education. If you do a search for “UCSD student demographics”, you’ll see a chart for race, gender, and income. I have no idea why the data is so different. That said, the UC report actually seems to support my general contention. “Since 2008–09, the proportion of low-income California resident students increased noticeably, with an offsetting decline among upper- and upper-middle-income families.” Moreover, as to my question regarding out of state students being largely wealthy, the report states: “Conversely, more than 40 percent of nonresident students came from families in the highest income category in 2016–17. This proportion has increased steadily over the years while those in the lower- and middle-income categories have decreased.” This seems to bear out that in-state upper income families have a tougher time gaining admission to UC schools compared to lower income families. And this is despite a distinct disparity between GPA and test scores between the two groups, on average. It’s a difficult pill to swallow when the upper income family bears a far larger absolute tax burden to state coffers, and is likely subsidizing the cost of lower income families to attend the very schools that the in-state upper income families are getting squeezed out of.