I have the same situation. HELP US

Just talk to a counciler, if you don't want to talk to someone that knows you, try a bullying chat room online. I am praying for you.

by telling your teacher and principal somebody that can help like your parent from getting bullying

This may sound dumb and to easy, but ignor the bullies. stop focusing on them and turn your attention and ALL of your focus on something you want or want to do and they will dispear.Bullies pick with people they think wont stick up for theirselves and people who don't seem to have anyone to stick up for them.  And pick up a dvd call "the secret". Watch it over and over agian. I don't condone violence but I do believe in defending yourself.

My question to you is ... why do you listen to them in the first place? Second question is have you ever considered that they may be jealous of you. It has nothing to do with what you have or dont have. It has everything to do with how unhappy the person is with themselves. I had a best-friend growing up that made me the but of all her jokes and said and did mean things to me or about me. I never understood why until I was an adult. She had the best clothes and everything but not the best attidude. Talking to other people as an adlut I realized that folks liked me better because I was me,  and cool to hang with as oppose to having the material things and acting like I was better than everyone.

you should find a techer in your school that you trust and talk tto him/her about it and then see if he/she gives you something to thing about it

You must reach out for help.  This sounds like GIRL bullying as excluding  and isolating someone is what girls often do.  You must tell your parents,
the school counselor or someone who can help you.  
As to what you can do....Do NOT give them your power.  You know
you are a good person who does not deserve this and try very hard
to be strong from the inside out. There is no one answer.  Sometimes ignoring helps...or confronting....and standing tall, but either way...you also
need an advocate to intervene.  They have a problem and you must not let THEIR problem become your problem.   Have some articles on my website on how to stand up and defend yourself.  They are free....go for it!