3. John F. Kennedy

President John F. Kennedy. White House official photo
Wikimedia Commons / Public Domain

IQ score: 150.65

JFK was not just smart — he was a trooper who fought chronic illnesses his whole life and refused to give in.

He pursued an interest in political philosophy at Harvard, then served with distinction in the Naval Reserve in World War II. During his abbreviated presidency (1961-1963), he faced some intense political situations.

Kennedy steered the U.S. through the Cold War, struggles with Cuba and the Middle East, and the rising civil rights and women's equality movements.

As the country was becoming more woke, the 35th president managed to push it toward a more equitable future by signing the Equal Pay Act of 1963 and proposing what would become the Civil Rights Act of 1964.