More context on the big differences in selectivity between colleges: Minnesota used to have "General College"[1] which, by design, admitted every student regardless of qualifications. That was changed in 2005, but the legacy of inclusion over selectivity lives on in some places.

I can say that CSE was very selective when I was there, and getting into upper division was even harder. But overall I don't think acceptance rate is a very useful statistic because program size affects it so much.

[1] http://news.minnesota.publicradio.org/features/2005/06/10_ap...