I wouldn't say I "shed" any image I had in high school when I went to college. UCR is only 12 miles away from where I lived (and still live) so it was pointless and a waste of money to live in the dorms or closer to campus (which I learned the hard way).
Contrary to what usually happens when going to school locally, I didn't keep a lot of my high school friends. I didn't really want to- most of them were backstabbing gossip-hounds and most of them didn't and still haven't done anything with their lives. I didn't want those people in my life anymore, thus the reason I found new people in college.
The one thing I'm glad I ditched in the transition from HS to college was my ex-boyfriend. We dated senior year of HS and both accepted admission to UCR. But he was so jealous and annoying that I felt I need to "shed" him... and I did.
I don't think for one second that my "image" has changed, but the few friends from HS I'm still close to say I have changed a lot. I think they have, too, but I think the reason why is just because we grew up and that's that.