So I got into an argumenet with my friends awhile ago *three weeks ago excact*. And it ended up with me walking away from them as well as some other words I shouldn't have said. I was angry though, and thats why I walked away..and they can't seem to understand that. So, three weeks later and they are STILL ignoring me, hard core.. and it hurts alot. There the only friends I have at this school, so I don't talk to anyone else at lunch time therefore leaving me alone to sit at my locker by myself.. IIN there still ignoring me? Or do I have the right to be mad too? (Sorry about my spelling and stuff, im typing from my ipod touch so I mess up alot.)

I would try to talk to them and express how sorry I was. See how that goes. If it does not go well, then maybe it's time to meet new people.
Get new friends. Show them that you don't need them.
Good luck.
I know it seems like alot now, but it really isnt, and if it is that big a deal then approach them about it, but I wouldnt bother with it myself.