In my kids Seattle private HS there seems to be a bias against Univ of Utah (a nearby state that many visit for skiing and outdoor activities). Publics in the SE and NE are also avoided. Here are the big publics and #s for the last 5 years
WA (in state 33) UW 21, Western WA 5, WA State 4, UW Bothell 3
Oregon U (9) Oregon 6, Oregon State 1, S OR Univ 2
Colorado (6) U Colorado 6
California (10) UC Berk 3, Cal Poly 3, UCLA 1, UCSC 1, UCSD 1, UCSB 1
Arizona (4) U AZ 2, AZ State 2
Montana (3) Montana State 2, U MT 1
Texas (2) UT Austin 2
Midwest (6) U Michigan 3, U Wisc 1, OH State 1, Indiana Univ 1
Southeast (3) UVA 2, GATech 1
That’s it for OOS publics. Note this is ca 25%? of the graduates. Most go to a private college.
Univ of Utah is conspicuously missing. Interestingly the only publics that are WUE schools on this list are S OR, AZ State, MT State and U of MT. So most are going to OOS publics where they pay OOS rates.