The Most Intelligent U.S. Presidents Ranked By IQ Score.
#11. Benjamin Harrison - IQ 132.2
President Harrison graduated from Miami University with a degree in law. Before and after his presidency, Harrison had a very successful career as an attorney. He also spoke on the behalf of the Republic of Venezuela against the United Kingdom.
#12. George Washington - IQ 132.5
The first President of the United States was George Washington. Surprisingly, he only had the education of an elementary school child, but he still became the first president of the free world.
#13. Martin Van Buren - IQ 133.4
Martin Van Buren never attended college, but he did begin reading about law at the age of 14. Just seven years later, he was entered into the bar.
#14. Rutherford B. Hayes - IQ 133.9
Rutherford B. Hayes was a graduate of Kenyon College and was a pretty intelligent man. Unfortunately, he had problems bringing the country back together after the Civil War.
#15. William Henry Harrison - IQ 133.9
William Henry Harrison dropped out of Hampden-Sydney College. He gained his notoriety from his military career prior to becoming president. Sadly enough he died after only 32 days as president due to pneumonia.
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