S.B.
See if there are any craft fairs going on in your area now and go and visit with the vendors. Find out how they found out about that one and how much they paid to participate. Ask about good fairs they attended and fairs that did not produce for them. Pick up cards for the vendors you visit and get their email addresses. When you have your plan in place, email them with an invitation to participate. You could also google craft fairs and your town name and you might be able to pull up on on other craft fairs that have been held in your area. I think it best not to have all the vendors selling the same thing so try to get some variety in the crafters represented. Good luck! Several craft fairs here that are put on my schools have built quite a reputation and build repeat business from year to year. One of the things that vendors want is people who want to look and buy their items (traffic and $$$). Come up with some incentives to get people in your school community (parents, teachers, neighbors, etc) to come and support the event.