I have to say, I was pretty successful in high school, had a decent enough time, finished on the honor roll, went to graduation -- and regretted that I did!
It was a total waste of 4 hours (yes 4 HOURS for one ridiculous ceremony, class was pretty big.) My family was barely there (just my parents, the rest of the family had exhausted their interest when my sister graduated a few years prior) and they were the only reason I was going. I would've rather just spent that time with my actual friends, rather than sit around the folks whose last names started with the same letter as mine...
Consequently, I skipped out on my college graduation, grad-school graduation (which was a HUGE achievement for me, in retrospect) AND my 10 year HS reunion. Haven't missed any of it. Anyone I wanted to stay in contact with, I have-- and those relationships have always been more important to me than maybe even the actual "achievements."
Your mileage may vary...