I believe that the schools do take account your GPA in regards to what school you went to such as if you went to Stanford and got a 3.5 vs. someone who went to school whose rankings weren't as high and got a 3.8 GPA. Also, I know people who are from a public university of the UC system and got into Columbia and Penn. Also, there is an alumni from my school who goes to Harvard. However, the UC system (Berkeley, UCLA, UCSD, UCI, etc) is widely known for their excellence in academics. So, even though it is a public system, schools might take into account that too just a little. Not a whole lot in general, but a little.