this is going to make me sound old but whatever. if you have the chance to go to your prom, fucking go to it. yeah it's not the most attractive thing to get all dressed up and all that shit but honestly, you're going to regret it if you don't go.
even if it sucks like you thought it would, at least you stepped out of your comfort zone and tried something new. if you have a girl, it will mean the world to her. if you don't, your date will surely love you for taking her and probably make it worth your while. either way though, when you in college and stuff at least you'll be able to speak from experience about your prom, and most likely - you'll enjoy yourself. don't pass up the chance to go, just give it a shot and have fun.