15 year old girl needs self esteem... I need help!?

The girls are spreading rumors because they are jealous of you, you are much more interesting and have much more life experience than them. Don't let them bring you down. High school girls can be very mean, but the more they see what they are doing bothers you the more they are going to continue to do it. If you can be tough enough to keep your head up through this, it will soon pass they will get used to you and move on to something or someone else to put down in order to make them feel better about themselves.