> I guess partially because they had to copy their homework from someone, so keeping good relations with the "nerds" was actually a good survival strategy

I was about to also mention the "copy homework" part, but I thought that would have sounded too specific, certainly glad that I wasn't the only one to whom that happened :) I've had a former highschool colleague thank me for everything I had helped her with during high-school at our 20 years reunion recently, she was a very smart person back then (still is) but the Physics classes just weren't for her.