When i go back to school what will i do?

since the 3rd grade everyone been making fun of me and stuff, the teachers will not do anything bout it ,the principle won't do nothing bout it,the guidance councealer will not do anything about it,and the school district wont do anything about it.i ignore the people,in revenge they sayy i did somthing to them and i say i didnt do it and i get in trouble........when i go to sit down at lunch they tell me i cant sit there and to get away.they say i'm fat when i'm normal weight,they say i'm ugly when im not,they call me it,and since on diary of a wimpy kid they said everybody at school did the cheese touch and you had to cross your fingers so you didn't get it,they do that with me! they say eeeeeewwwwwwwwwwww...... haley germs,why do they do that stuff to me? i never did anything to them....and im not switching schools like a cry baby.what should i do? the first day of school is in august,and im going to that school next year