Traditionally, professional development for teachers in most schools can be costly and sometimes frustrating. Often schools only provided partial funding for teachers to attend a conference that requires travel, food and hotel costs. Or, we fly several hours to attend a conference only to be disappointed about the learning that occurred. Have you considered EdCamp?
EdCamp is a growing phenomenon in the field of education. It is very much like an an unconference. As definded on the Edcamp wiki, "