Here Are All of the US Presidents Ranked By Their IQ

Big Head, Big Brain

John Quincy Adams had a notoriously large head, most likely so it could hold his high 175 IQ. That's the highest IQ of any president that has ever lived. John Quincy Adams was a lawyer before and after his presidency, and he helped create the legal systems that we still use to this day. 

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Post originally appeared on Upbeat News.