Confused on why top students are rejected at UCSD

<p>even though the UCs say they dont look at apps. considering what other schools/UCs that the student would get into/go to, they probably do. loads of highly qualified kids last year at my school (when i applied) got rejected from one of the top 3 UCs and accepted to only one (if any at all).
i know my teacher has no clout, but when my classmates were confused as to why they didnt get into like ucsd, for example, she said it’s probably because ucsd assumed that s/he would get into ucla or ucb.</p>