<p>I haven't seen a breakdown of average SAT by OOS and IS for each UC. I think that's what you're looking for. I know the high-end UCs have a higher threshold for OOS but UCR, for one, states that they don't take it into consideration. Also, the UCs are a bit different from many U-State schools in that they have many campuses that each have their own admissions criteria. </p>
<p>The theory I was trying to state (only a theory) - the higher-end UCs are more desired by OOS and therefore more OOS students are willing to pay the higher tuition to go there because they may be values higher than their in-state Uni's. Many of the lower UCs aren't as desirable, don't have quite the rep, and there are probably far fewer OOS students willing to pay the hefty premium to go there versus their in-state Uni's. In other words, the extra tuition hit may seem worth it to an OOS for UCB/UCLA/UCSD but maybe not for UCSC/UCR/UCM for example.</p>