maybe your ego is too big. no I'm kidding. hmmm... maybe they're intimidated by your prettifulness

boys are intimidated by you because they are scared they are not good enough for you, and they will get rejected. or they just don't find you attractive.

Because none of the boys know that you like them. Having a boyfriend is a mutual thing.

Your attitude.

Maybe u go to an all girls school.

Something about the 75% is disturbing to me. If you had said half, it might not have come off so badly. Maybe you should give some other aspects of yourself that much thought. Are you 75% smarter, or nicer, or funnier than the rest of your class?

Maybe you are too into yourself. Maybe you are too high maintenance. Boys (at least the ones I know) don't like that.

Being prettier is not always the most important thing. Personality and a little humility may improve the situation. You can be friendly and natural and you have much more chance of somebody asking you out than the attitude of I am so lovely you SHOULD want me.

Being in a relationship isn't all about looks. Even if you are prettier than 75% of those in your grade (which may be just a tad conceited to state about yourself, particularly since beauty is in the eye of the beholder) it doesn't mean boys suddenly would want to have a relationship with you. Some may but I would suggest those who want you to be their girlfriend purely because of looks aren't ones you should consider going out with. Relationships should be based around matching personalities, friendship not just physical attraction (but this often helps a bit). To more directly answer your question, nothing is wrong. You don't HAVE to have a boyfriend, and you shouldn't want one simply for the novelty of it. If you like a boy that much you feel you would like to be in a relationship with them and you know them well enough then you should discuss your feelings for them. They may be mutual, they may not. If not, that's unfortunate but there is nothing wrong with you. Some people aren't compatible and believe me just because you are attractive doesn't suddenly mean a boy is going to want to go out with you. You shouldn't feel in any rush to get into a relationship anyway, it's no necessity, at your age or any age.

Maybe it's your lack of confidence.

Its hard to because half of them are all druggies, so are the girls.

Do you make an effort to talk to guys, or do you think because you "think" you're pretty, you don't have to? It don't work that way, my dear.

erm, I'd probably say your still single because your so up your own ass - im prettier than 75% of the girls in my grade. I mean looks are a bonus for me when i'm interested in someone but i don't find a hot chick and see if i like there personality i talk to someone and if i like hanging out with them i ask them out. If there hot its a bonus.