The Fair Use Checklist and variations on it have been widely used for many years to help educators, librarians, lawyers, and many other users of copyrighted works determine whether their activities are within the limits of fair use under U.S. copyright law (Section 107 of the U.S. Copyright Act). The four factors form the structure of this checklist. Congress and courts have offered some insight into the specific meaning of the factors, and those interpretations are reflected in the details of this form.
This page frames the use of a checklist developed by Kenneth Crews and Dwayne Buttler. The checklist is available in PDF form and offers under a Creative Commons Licence.