John F. Kennedy IQ

The only reported figure is 119. Biographer Thomas C. Reeves, who reviewed Kennedy's school records, reported that score from an intelligence test taken before he entered Choate around 1930. It was a single group test with old norms, so LifeScore uses a wider working range of 115 to 140.

Smarter than his school grades suggested. He was an uneven student but turned his Harvard thesis into the best-selling book Why England Slept, won a Pulitzer Prize for Profiles in Courage, and handled the Cuban Missile Crisis through intense, detailed deliberation with his advisers.

Biographer Thomas C. Reeves reported it after reviewing Kennedy's school records: an intelligence test taken before he entered Choate. Nigel Hamilton's 1992 biography is usually cited for the detail that it was an Otis group test.

On a modern scale with a mean of 100 and a standard deviation of 15, 119 sits around the 90th percentile. But a single group test given to a boy in the early 1930s carries wide error, and its norms are not today's.

His later record, from a published thesis to a Pulitzer Prize, suggests the test may understate his adult ability. That is why LifeScore uses a range from 115 up to 140 rather than a single higher number.

See how the other famous IQ numbers trace back in where famous IQ numbers come from.

Kennedy was a fast reader and a sceptical questioner. During the Cuban Missile Crisis he set up a small group of advisers, pushed them to argue out alternatives and chose a blockade over an air strike, while keeping a back channel open to Moscow.

What supports it

• Biographers who reviewed his school records report a score of 119 on an intelligence test taken before he entered Choate.
• His Harvard thesis became the published book Why England Slept (1940).
• Presidential records document intensive briefing and decision-making during major crises.

What it cannot prove

• A single group test from the 1930s carries wide measurement error and old norms.
• Writing and leadership are not direct IQ measurements.
• Health, collaborators and historical context materially affected performance.

John F. Kennedy's IQ is represented here by a retrospective estimate of 119, not a verified test result. John F. Kennedy is best known for exceptional charisma. The useful question is what the surviving evidence shows, not whether a precise modern score can be recovered.

Charisma combined with intellectual engagement. High extraversion, high openness. Inspired idealism while managing Cold War tensions.

The dominant archetype here is The Hero. This archetype shapes decision patterns: what feels natural, what creates friction, and what blind spots tend to emerge.

Estimated IQ is 119. This is a rough estimate based on documented accomplishments and contemporary accounts, not a literal measurement.

Kennedy is the only US president to have won a Pulitzer Prize.

John F. Kennedy's estimate of 119 falls in the high average IQ range. Want your own number rather than John's? Take the free IQ test or the quick IQ test.