I’ve found the most effective way to get people to quit bugging you is… not to just ignore them. I’ve been told that all my life and I sort of figured it meant “say nothing and then walk away and don’t think about it.”
What matters is that they know you think you’re better than them. Whether you actually think it or not.
Laugh derisively at them. When they make fun of you, give them an “oh my god that was incredibly stupid” laugh and then say, “Sorry. that was just… wow. I didn’t realize people your age still behaved like that” or a simple, “hah! what are you, four?” or an amused look and, “I cannot believe you’re saying that.” or a sarcastic laugh and “you’re SO FUNNY! oh my god, ‘she shoots and misses?’ comedy GOLD!”
If there are specific offenders, turn to their friends and matter-of-factly say, “Poor thing. He’s just frustrated because he knows I’ll never go out with him.” Even if he doesn’t actually like you- the idea is not to make him go, “oh god, she’s so right! I must change my evil ways!” it’s to embarrass him in front of his friends.
And the most important part is, when you say something and everyone gets all, “OOOOOHHHHHHH!!! She’s getting MAD! i’m scared!” THAT is when you smile deviously and walk away or turn away or somehow let them know they no longer have your attention.
In the middle of class, depending on the teacher, any comment they make can be met with a sarcastic, “um, I’m here to learn and I really want to know all about ionic compounds, so I’d appreciate it if you’d keep your little comments to yourself, mmmkay?” Tone of voice is important there because you have to sort of convey that you don’t ACTUALLY find ionic compunds interesting. Just more interesting than him.
Another one of my favorites is to start arguing with them about their specific insult. “That doesn’t even make SENSE!” “whu…? yes it does!” “no it doesn’t, moron! I didn’t take the bus because I’m scum? there’s no logical connection between the two!” even if it does make some sense, they’ll be caught off-guard, get sidetracked, and then you can leave them feeling baffled.
good luck. Remember, boys are dumb.