Look at me and what I was in high school, and look at me now, and the difference is night and day. School was a living hell for me that I barely got out of with a shred of sanity and positive self-image left.
University gave me a second chance outside of that hell, and I came out an entirely different person. I'm pretty certain of it.
Of course, I'm still the same witty, irreverent, possibly even intelligent person I always was, but it's simply a new outlook, a new mindset. Also, University allowed exposure to scenes and culture that simply didn't exist in the tiny ass towns I grew up in. I came away from it with a much larger world-view than I would have ever had if I'd never gone.
Also, dropping about 30 or so pounds somewhere along the way between the end of one and the other made a definite physical change, as well.
So, no, I'm not entirely the same, yet I am. If that makes sense...