Chester Arthur
With an IQ of 152.3, Chester Arthur is known as one of the smartest presidents of the United States. His high IQ score was put to great use during his time as a lawyer and a politician. Arthur took the top position following James Garfield’s assassination. However, Arthur’s presidency was not as inspiring as everyone at the time hoped it would be. It seems that he is more known for his earlier career highlights than his time as president.