Does your reputation in high school really matter?

No. The only aspect of high school that matters is your final grades. Nothing else is important; not who you took to prom, not which parties you got invited to, not which clique you were a part of, all that matters in high school is your grades and maybe your extracurriculars.

After you graduate, nope.

Not really it means nothing

Maybe at the time it does but afterwords, no, not really

no. but the events that formed your reputation may continue to matter. if you had a reputation for cheating on every person you dated, you usually get to hit the reset button when you go to college or move. BUT, If you continue to cheat on every person you date, you're gonna run in to the same problem.

Until you graduate and then it becomes meaningless.

Yes

Yeah. Even now people are all like "Well, you were the Kreator fan who drew really well and dated Meredith, so I'm going to give you a raise".

High school is everything.

Not one bit. At college and out in the workforce the only thing that matters is what you're capable of, not which kids you hung out with.

Not really when you're out of high school.