I had a pretty hard time in highschool, I wasn't engaged with any of the work, I was bored in literally every class, even art classes, I didn't feel like I was being taught to or challenged in any way. I scored really well on tests but did almost none of my assignments because it just felt like pointless busy work which was something I couldn't stand.
I was a bit of a rabble rouser as well and would try to challenge the system in any way that I could. I was an outspoken critic of the way they ran my school and the way education, in general, was done in the US and would write anonymous essays about it and post them in classrooms. It was before any of the school shooting hysteria so we had more leeway about what we could do, say, wear and carry around, however, some of my behavior was still alarming to the faculty and I was eventually banned from the school library. I had the attitude (which, to a certain extent I still carry around) of "it's up to me to expose the weaknesses of the system."
I had good friends, some of whom I still keep up with, but I had some health problems that prevented me from being at school a lot of the time so I eventually just dropped out and got my GED.
I'm a much happier person now that I'm done with the 'sitting in a classroom' era of my life. =]