I've never been to a quilting class, but I have been to other "craft" type classes and there has always been - at least a supply list and a general lesson plan of what is going to be covered.

I think I would definitely speak up - privately with either the teacher or the shop manager/owner because he/she should be at least concerned that the the disorganization and unpreparedness could cost them customers. Who knows, maybe they will even offer you a job!