Copyright is a very complex law which makes it difficult to address the many situations and questions that will arise when faculty members are preparing materials for classes. Here are a few guidelines to check against:
You may need to request permission if you determine that the use is not a Fair Use, the work is still protected by copyright and not in the Public Domain and no other statutory provisions apply.
If you have determined that permissions are necessary, review the Centre College Faculty Handbook: Requesting Permission page for tips on how to go about getting the permission to use the material you need.