Does Berkeley/UCs really only focus your highest SAT score?

They say that they want all SAT scores sent, and I had a poor first score, a reallyyy bad second score (June arg), and a pretty decent November score. I was contemplating score choice, but I heard that there is a possibility that they see the highest score that is entered in the UC app and cross-reference with the official SAT score report (and don’t actually see the poor scores for admissions purposes at all). How accurate is that statement, and should I send all my scores?

Some people say that taking the SAT three times is fine, but for UCB, I’m not too sure (especially with that huge dip in June too).

Yes, they will look at your highest score from a single sitting.