Something to keep in mind...it's harder to get into universities as a transfer than as an incoming freshman.
Of course, if you have really bad high school grades but want to go to an uber school, you can become an academic rockstar at one college and then apply to your dream school.
Something scary to consider: some effing jobs actually care about your SAT scores and stuff. I'm applying for interviews and crap now and some want to my high school test scores. Ridiculous. :rolleyes2