A trio of Atlanta CEOs went head to head with the students of Ron Clark Academy on Monday night for a spin on Are You Smarter Than a 5th Grader? Unfortunately, it seems a few of the city’s esteemed business leaders aren’t as knowledgeable of American history as one might hope. None of them knew who the tenth president of the United States was. Granted, most people can’t answer those sorts of questions off the top of their heads, but one CEO guessed TR, as in the twenty-sixth president. Hrm.