Most Helpful Guy
I'm not a gril , but I have some tips, though I'd recommend based on my personal experience.
First of all, high school is a place where everybody judges everyone , may it be because of looks or character, grades or the clique you're in or because of whatever.
What I'm saying here is that you should wear clothes of good quality, brand clothes if possible - but do not wear anything "weird" like band shirts all the time or anything really unusual. ( Always stick to the rules of your school's dress code, too, you don't want to get in trouble either)
And you don't want to be the target of gossip or bullying in high school just because you wear strange clothes, you know? So, simply wear regular apparel that suits you.