Being bullied what to do?

well i sit in some of my lessons on my own in a corner because i dont no anyone and then everyone stares at me or calls me a skank and stuff when im not they all seem to be the popalar ones i always seem to get called a loner because im not with my friends and in spanish i get called stupid and dumb because i dont even no what some words are and cant pronounce clearley also in maths a group of kids kept back noices and saying its me and kept staring at me and being horrible and then one of them shouted out were trying to communicate with you and then they kept asking questions like if i like christmas, or reindeers or christmas tree's and like in english i just sit on my own and in some lessons i just cant consentrate no more i feel like i dont wanna be here i spoke to my parents they just said make friends but its hard to get into the group what they call popular i sed to them be me for a day and see how i feel who am i ment to go to and who to talk to please help thank you.x