I know how you feel. I'm in senior high school and I just tend to hang out with the few friends I have. I was a loner in primary school and then a made a few close friends in high school. I've learnt that nothing good ever comes out of hanging out with those "IT" groups. They are always so mean to us, then when they need help, they come crying to us. I'm also sick of it... To be honest with you, don't let them bother you. As the other posts have told you, just be yourself, that all you can do these days. If they bother you, ignore them. They won't get any gain out of annoying you if you keep to yourself. I hope that helped, and I was kind of venting myself... Sorry.
