Replacing School Napkins with Seventh Generation Ones

At my school there are currently unsafe, bleached, and non-environmentally friendly napkins being used in the cafeteria. So, in order to change this, my friend and I spoke with the principal and ask if replacing them was possible. He told us it was, but only if we did research on a company that would be willing to be signed on with the school. So in our research, we came across 7 Generation. However, I'm not sure if it is in our price range, or even where or how to buy orders in bulk, or contact the company about our school's needs. Changing our school's napkins would make a great impact and any help with this would be really appreciated. Thanks!