I found this and thought it would be fun to post and see what people score on it. I was a bit disappointed in my score as I only managed a 93.75. It is basically a series of very basic, easy questions on history, economics and the US government. I admitted to how bad I did, so post your results when you are done.
http://www.americancivicliteracy.org/resources/quiz.aspx
http://www.americancivicliteracy.org/resources/quiz.aspx