“is there anyway to find the actual acceptance rate? Like for example maybe the college has a 60% acceptance rate, but being a flagship comp sci school its CS acceptance rate is only 20% and x many people applied with x many people getting in, etc …”
UIUC and Purdue come under this description. I have found data on their CS acceptance rates through news articles and press releases issued by those (and other) universities. It is not easy information to find.