HS #1 (Fresh/Soph) - I found out later that I was assumed to be smart, because I hung around with the smart kids. I hung around with them in the hopes I'd learn something.
HS #2 (Jr) - Can't say I was identified with any particular group. Classmates were stunned to find out I was a Junior, thinking I was some Sophomore (I looked really young). The school & town was real cliquey, so I sat alone for quite some time before finding people who'd accept me. They and I were pretty non-descript.
HS #3 - A nobody. Hated the place, was sick of school entirely by this point. The brother of a friend could not believe I was in his class year - he didn't even know I was there, and that's kind of how I wanted it. The only person I hung around with got suspended. The valedictorian for our class delivered a rant against the school & teachers at graduation and had to be physically removed during his speech (sorry I missed it).