Did you know that people wishing to become naturalized citizens, so that they can vote and become eligible for a US passport, have to pass a US civics exam? Did you know that some 90% of the people seeking to become naturalized pass this exam, yet most native-born Americans would fail? (Here is a sample test you can try.)
Did you know that the Lincoln-Douglas debates in 1858 were presented at a roughly 12th grade level, whereas by the year 2000, Presidential debates were at a level slightly below middle school? What went wrong?