I initially broke this down by year (i.e. freshman year, sophomore year, etc.). I had a chronological time line, but for the sake of brevity and readability I'll focus on my senior year.
My family moved further out East and I enrolled in a new school. I didn't think much of the school at the time. In fact, I thought it was incredibly lame. But in retrospect I had a lot of fun. I capitalized on my strengths. I knew how to deal with different personality types and different ethnic groups. I was a social chameleon. My motto was "get in where you fit in." I came off as a very likable person. I was that very friendly and affable guy who could chop it up with anybody. The downside to all of this of course was that the people who I couldn't stand at the time would all want to be friends with me. The Negroes, pretentious types, pot heads, flunkies and so on. Most of my close friends were tough talking Italian-Americans. And I was in with the "in" crowd.
I wasn't necessarily considered a "nerd" but I had very high grades and I was consistently on the Principal's Honor Roll. I did well on all of the subjects that really mattered such as math, English, history, science and Spanish. High school was quite an interesting journey. I'm really so multifaceted though that it's hard to fit me into one box.
EDIT: Modified for brevity.