I need sponsers/donations for a charitable dance that i am setting up for my school, can anyone help?

I am creating a dance at Downers Grove North High School in Downers Grove IL, 60515. This year all the money is going to the American Cancer Society. The problem that i am having is the lack of funds that i am facing to provide a dance to raise the money.....i also need supplies(water....snacks etc) my school has 2200 people and 1400 are expected.....any donation would help.