See resources here regarding Copyright in LISD.
This site, created by the University of Texas libraries, offers educators a comprehensive tutorial about the teacher's role in promoting fair use as well as information about following the fair use guidelines.
Use this site with your students. It includes sample permission letters and an interactive quiz in addition to age-appropriate explanations and examples.
U.S. Copyright Office
This federal government site offers a basic summary of the law as well as FAQs and publications related to copyright concerns.