I don't believe this is accurate.
"Research has shown that grades are the best single predictor of college performance and aren’t as heavily influenced as the standardized exams by income, parent education levels and race."
Grades vs. SAT scores: Which is a better predictor of college success?
If the University of California drops the SAT and ACT, high school grades are likely to play a larger role in admissions. Is that a good thing?www.latimes.com
See also Predicting College Success
Did you actually read what the LA Times based it's article on? It's a report by two Cal-Davis Ed-Policy profs who attempt to defend the "balanced" system that UC & CSU use in preference to the SAT. All they can claim is that the balanced system is not worse than the SAT. They also claim that HS GPA is better - but only at the (less prestigious) CSU schools. That's all the further they could bend the data despite the obvious motivation to defend the status quo.
And I know . . .there are a lot of studies that show that HS GPA correlates better with college success than SAT . . . at non-prestigious schools. But that is neither surprising nor relevant to the conversation - unless, of course, UConn is aspiring to dive down to the Cal-State level.