One of the major responsibilities assigned to directors of audio-visual education is that of conducting previews of educational motion pictures being considered for purchase. Such a responsibility is generally recognized to be a large and time-consuming one. While there appears to be some general agreement among audio-visual directors as to certain acceptable methods and procedures with regard to pre-purchase previewing, there are also some differences of opinion on certain specific procedures which account, in part, for the many varied practices which actually exist.
