UK guy here, so i'm going to assume the time from 11-18
What did you do back then?
Mainly? I was an angry bastard. Most weeks I got into fights of some sort, it was a miracle that they never kicked me out.
What do you regret most?
I don't regret any of it. I did my best in the lessons. The only reason I got C's instead of higher marks in my tests was because social services had told them that because my family had been broken apart I wouldn't be able to take the higher tests, so I got stuck with the foundation tests. That annoyed me, especially as I had been living with my nan since I was 11 and I wasn't even part of the social services stuff, I was pretty removed from it.
I suppose I should have picked better subjects. I took media, graphics and ict. All of them were pretty crap and not really needed at a college level.
Was this a time worth remembering or forgetting?
Mainly forgetful. I didn't do anything worthwhile until College at 16.
What did you do afterward?
I'm now a uni student. I'm studying computer science and quickly finding out that while I can code well enough to pass, i'm definitely more into stuff like crafting armour, painting, making mechanisms of sorts (hidden blade from AC, stuff like that). On the plus side, its a degree and using the money i'll be getting from that, i'll manage to fund my hobbies quite well. I don't want to turn a hobby into a job, it'll suck the life out of it.
Now, college was the interesting time for me. I was 16 when I started and 18 when I finished. Throughout those two years I realised one thing. It doesn't matter how much you know, someone will always know more unless you're the unlucky bastard at the top of the class (in terms of being asked for help). So basically I learned what I could and helped out the people who were smarter than me so I had a safety net for when I couldn't work something out.
Basically, college taught me that being social is the key to success. You can always work more effectively with people than without people. I also stopped punching people in the face. Colleges tend to frown on that for some reason. Its actually quite silly sometimes. A person came into the campus (he wasn't a student) for the sole reason of punching a guy. The guy he punched fought back and nearly got thrown out for defending himself. These places suck.