High school was the greatest for me. Freshman year I didn't know alot of people, so that was mediocre, but once sophomore year started, holy crap, I was doing everything I ever wanted to do. It was so much fun, and high school was a breeze for me. Spend 1-2 hours on HW, then the rest of the day and night time to chill with friends. I met my closest friends there too, and probably my greatest memories all happened during high school.
Now I'm getting close to the end of college, and it's been alright. There's no real excitement as far as it comes with new things. Dorming was fun for awhile, nothing more fun then inviting female friends over for a few hours, but overall nothing really exciting happens.
My suggestion to anyone, do all the crazy shit you ever wanted to do before you get to college, chances are you'll have less and less free time then, I'm glad I did so much back then, I have no regrets even when I did stupid crap, it's just a life experience.