The Pew Forum on Religion and Public Life has a religious knowledge quiz; you can take it here. I got 100; the average score, however, is 50. Some interesting, and somewhat troubling facts:

  1. Evangelical Christians do better than mainline Protestants.
  2. Church attendance makes almost no difference.
  3. Jews and atheists do better than Christians of any variety.
  4. Mainline Protestants know little about the Old Testament or religions other than Christianity.
  5. Christians know little about the history of their own faith. Few can identify central figures of the Reformation or the Great Awakening.