Im getting picked n and ijust cant take it anymore!!Help!?

well okay to start off im a girl nd my skool is in academies blue,green,and burgaundy...iwas in blue and all the kids in my cl nd the other same grade clas(in blue)all came frome a different school so they all knew eachother so tht was sorta difficult for me to make friends but later on imade 2 new friends nd we did everything together but we all got introuble 1day and they stopped talking to me and it came up to the point where to would tease me and get the other kids to join in so my mom switched my academies but she doesnt know about the teasing she switched me b/c iasked.But iam now in burgandy nd dont get me wrong its great ihave "Real" friends because ihave realised those 2 friends ihad in blue arent good or true friends!:( but im tired of getting picked on like @ lunch wen we go up to get our food they start yelling allsorts of stuff wen my cl pes by and its the whole cl in blue..icould iqnore it becuase one of the girls i supposed to ove..but god iwish she did becuase ikno once shes gone the teasing will stop.I DONT want to tell a adult so people start to think im a snitch or tease me more becuase they will.Blue academy is on the 3rd floor iam now on the 1st but wen they see me they always pick on me d ijus iqnore it but im sick of it...what can ido idont want to tell a adult nd trust me even if ido they wont do NOTHING but ijus need som advice some words to help me feel better becuase i can honestly say they ruined this school year so far for me like my grids all went from 90"s tro 55 nd im trying better but Im jus really sad and a little depressed:/