The 44 Dumbest U.S. Presidents Ranked By IQ

4. William H. Taft: 139.5

Based on William Taft’s record, his ranking is somewhat shocking. Taft graduated from Yale University second in his class, beating out 130 other students. He then juggled part time work as a court reporter while he attended University of Cincinnati Law School. This just goes to show that with enough hard work, low intelligence isn’t a barrier — though a legend does say that he once got stuck in the White House bathtub and couldn’t get out.