Take the quiz here
This quiz is a joint effort between the Pew Research Center and Smithsonian magazine. 1,006 randomly sampled adults that took part in the national survey. If you get 13 out of 13 you are in the 7% of the 1,006 people that took the quiz. (It doesn't count online results)
I got 13 out of 13 correct. Its a pretty simple quiz though.