I have had the unfortunate experience of watching the TV show “Are you smarter than a fifth grader?” on a few occasions. I've seen a grown woman — a woman who earned her living teaching 8th grade — embarrass herself with her lack of basic knowledge. At the end of the show, this contestant had to give the obligatory “loser” signoff for the show: “I'm Sally Smith and although I'm a 8th grade teacher, I am definitely not smarter than a fifth grader.”
Note also that some of our politicians think that we have 57 states and other politicians think that Arizona does not share a border with Mexico.