Instructional television, like commercial television, will teach, providing it is believed in, is mediated by respected and believed-in commentators, and always retains the ring of reality. It is also necessary that programs be designed with the teacher in mind. (Author/IRT)

In recent years, different researchers and research agencies, teacher associations, national education organizations, and the U.S. Department of Education have published lists of the characteristics of effective professional development to guide school leaders in their improvement efforts. This study analyzed 13 of the better known of these lists…