I actually went to a great little school in southwest PA called Waynesburg University. It's not a full "Christian" college. What I mean by that, is that there aren't all Christians that go there. But it's amazing because you get to interact with non-believers and really challenge them in their faith on a daily basis. Also you can look at either Geneva or Grove City, both are in PA. I have friends who went to both and say they loved it there! Good luck!