Faculty have an obligation to practice high copyright standards. Refer to the Faculty Handbook to see the College's policy on adhering to copyright legislation. In addition to the guidelines in the Reproduction of Copyrighted Works by Educators and Librarians (PDF) referenced in the handbook, there are many resources available on the internet to help you understand copyright law.
Check out these resources for more information on "fair use" and copyright:
Copyright Crash Course (University of Texas)
Fair Use Checklist (Copyright Clearance Center)
Know your Copy Rights (Association of Research Libraries)