VERY anecdotal and I have no idea the statistics on who goes where after school. My only point is that you can get where you want to get to regardless of school. It's possible. I just don't know the probablity.
But I knew two people who went to Harvard for graduate studies from USU. One went in Econ, the other went for Finance. Both are great people. One was my bishop, the other was a sister missionary I served with.