Should I forget my high school friends?

Non of them seems to want me around, they ignore me, never involves me in NOTHING, some don't like me because I'm a special ed student, and some give me weird looks and move away from me. At the homecoming dance and Prom, when they're with there other friends, I said hi and they pretend that they don't know me. These two little brats (I knew them since there freshman year), they always hated my guts. They NEVER say hi to me, but they do say hi to everyone else!! They ALWAYS frown when they see me. They ALWAYS steal my spotlight in drama club! I'm suppose to be the star, not them little snobs! But anyways, should I forget them and stick with my friend Shona, from my vocational school, cause she's the only one that involve me in activities?