Friends That Bully ?

Well im 14 years old and i go to high school. A bad roumer has gone around about me. My friends belive it and have falen out with me and when i explain about it they dont listen and give me dirty looks. They also get other girls to come up to me and say things. I have got no-one to be friends with because everyone belives the roumer. I used to laugh at new kids in school that had no friends and stood wandering on there own. Now im turning into one! thats why i have been taking time off school. My grades are going down because im skipping school and my mums getting upset knowing somethings rong. I Really want to move school but i have been on the waiting list for 2 years now and i dont think im going to get into the school but i cant live my life at the school im in !! i know its long but Pleasee Help !!x