The writer provides some guidelines and a review of the laws regarding television or movie viewing in public schools. In general, if a teacher wants to use a video in class, the video should be tied to instruction and parents should be notified if the nature of the video might be construed as objectionable in any way to a reasonable observer.
Miller, R. G. (2006). Roll tape? Recommendations regarding video viewing in public school classrooms. Science Scope, 29(8), 10-11.
National Science Teachers Association