We used, and liked, this textbook.
http://www.amazon.com/Cosmic-Perspective-5th-Jeffrey-Bennett/dp/0321505670 It would be typically assigned in a college astrology course for non science majors. There online resources available for instructors.
http://www.pearsonhighered.com/educ...gAstronomy8482-The-6E/9780321620903.page You can check here to see what you'd have access to.
While I'm sure there are more exciting ways to approach the subject, if you need a straight up course that would meet requirements this is a good text. There is plenty of detail and the chapters are set up in very traditional format with vocabulary, review questions, problems to solve, etc.
