Presidents’ IQ Scores: Discover Who’s The Smartest of Them All!

44. Ulysses S. Grant – 130

Ulysses S. Grant was an American military leader and the 18th President of the United States. Known for his intelligence and strategic prowess, Grant played a significant role in the Union Army’s victory during the American Civil War. With an IQ of 130, he demonstrated remarkable intellectual capabilities. Grant’s military accomplishments earned him widespread respect and admiration. As president, he focused on promoting civil rights and reconstructing the South. Grant’s presidency, however, faced challenges, including corruption scandals that tainted his administration’s reputation. Nonetheless, his contributions as a military leader and his commitment to equality make Ulysses S. Grant an important figure in American history.

43. George W. Bush – 138.5

We all remember George W. Bush, who held the presidency for two terms before Barack Obama took over. His time in office, from 2001 to 2009, was far from smooth sailing. The infamous 9/11 attack occurred during his watch, followed by the challenging American invasions of Afghanistan and Iraq. These events would have tested any leader to their limits. Despite his occasional verbal slips, the 43rd President of the United States is not lacking in intellectual capacity. Professor Simonton’s study indicates that Bush Jr. falls in the upper range of college graduates in terms of raw intellect.

42. James Monroe – 138.6

James Monroe, the fifth president, dedicated his service from 1817 to 1825. Notably, he held the distinction of being the final individual in office who could proudly call himself one of the Founding Fathers. However, Monroe wasn’t one to flaunt his impressive accomplishments. In fact, he maintained a modest demeanor despite his remarkable achievements. A woman from Virginia, who had the privilege of meeting him, described Monroe as “tall and well-formed, dressed plainly in the old style.” His quiet and dignified manner left a lasting impression. Additionally, Monroe’s intellect shone through as he acquired legal knowledge under the tutelage of Thomas Jefferson.

41. William Howard Taft – 139.5

In 1909, William Howard Taft assumed the presidency, becoming the 27th person to hold that esteemed position. However, during his single term in office, he didn’t make significant waves. Interestingly, it was after leaving the White House that Taft truly found his stride. He embarked on a new career path as a law professor at Yale University. His expertise and knowledge were recognized, and in 1921, he took on the prestigious role of United States Chief Justice. Serving as the Chief Justice demands a sharp and astute mind, showcasing Taft’s intellectual capabilities that flourished beyond his presidential tenure.

40. James Buchanan – 139.6

James Buchanan, the 15th president, held office for a single term from 1857, a period fraught with escalating tensions leading up to the Civil War. As anticipated, his presidency was marked by the mounting conflicts of the era. Notably, Buchanan possessed exceptional qualities as a debater and displayed a deep understanding of the law. The White House website aptly describes him as “gifted as a debater and learned in the law.” These attributes are further reflected in his above-average IQ, placing him within the top two percent of scores. Buchanan’s intellectual prowess undoubtedly played a role in his ability to navigate the challenging political landscape of his time.

39. Andrew Johnson – 139.8

Andrew Johnson faced the daunting task of assuming the presidency after the assassination of his predecessor, Abraham Lincoln, in 1865. This meant taking the helm during the crucial period of post-Civil War reconstruction, a time that required exceptional intelligence. However, as history classes may have taught us, Johnson’s legacy is not one of great acclaim. He holds the distinction of being the first American leader to undergo impeachment, although he narrowly avoided removal from office by a single Senate vote. Despite this setback, Johnson continued his political career as a Tennessee senator, leaving his mark on the political landscape beyond his presidency. His tenure serves as a reminder of the complex challenges faced by leaders during times of great turmoil.

38. Zachary Taylor – 139.8

Zachary Taylor assumed the presidency in 1849 as the 12th U.S. president, although his time in office was brief. However, it was his remarkable accomplishments prior to his presidency that left a lasting legacy. Taylor’s role as a general in both the Mexican-American War and the War of 1812 had already elevated him to the status of a folk hero. Sadly, his presidential term was tragically cut short. Less than a year and a half into his tenure, Taylor fell victim to gastrointestinal disease, succumbing to the illness after a five-day battle. While his presidency may have been brief, Taylor’s heroic feats as a military leader endure as a testament to his remarkable character.

37. Harry S. Truman – 139.8

In a remarkable twist of fate, Harry S. Truman found himself thrust into the presidency shortly after being elected vice president, following Franklin D. Roosevelt’s passing in April 1945. Truman wasted no time in making his mark on the pages of history by making the weighty decision to unleash atomic bombs on Japan, ultimately bringing an end to World War II. Reflecting on his sudden elevation to the highest office, Truman candidly expressed, “I felt like the weight of the entire universe had descended upon me, like the moon, the stars, and all the planets colliding.” His words capture the immense responsibility and pressure he faced, as he navigated the crucial moments that shaped the course of history.

36. Warren G. Harding – 139.9

Warren G. Harding clinched the presidency on his 56th birthday in 1921, following a successful career as a newspaper publisher and a term as a senator representing Ohio. Notably, Harding was an advocate for women’s suffrage, indicating a certain level of shrewdness. However, history remembers him as one of the nation’s poorest presidents. Regrettably, Harding’s leadership was marred by a lack of clear direction, leaving the country without a sense of purpose. Despite his promising background, his legacy remains tarnished by his inability to effectively steer the nation.

35. George Washington – 140

In the year 1789, George Washington made history as the inaugural President of the United States. With an estimated IQ score of 140, Washington’s intellectual prowess reached remarkable heights, bordering on a genius level. This comes as no surprise considering his renowned leadership during the Revolutionary War, where he commanded the armies that successfully repelled the British forces. Such a monumental achievement attests to his exceptional military acumen and strategic brilliance, far exceeding the capabilities of an ordinary military figure. George Washington’s remarkable intellect played a crucial role in shaping the course of American history, firmly establishing him as the revered Father of a Nation.

34. Barack Obama – 140

According to available information, Barack Obama’s IQ is estimated to be around 140, which is considered in the “Very Superior” range of intelligence. Obama’s academic achievements are notable, having graduated from Columbia University with a degree in international relations and a law degree from Harvard Law School. He first entered politics in 1996 when he was elected to the Illinois Senate. Throughout his career, he has been recognized for his leadership and diplomatic efforts, receiving the Nobel Peace Prize in 2009 for his work in strengthening international cooperation and diplomacy. During his presidency, Obama achieved significant milestones, including implementing the Affordable Care Act, improving the US economy during times of crisis, and reaching a historic agreement on environmental issues.

33. Gerald Ford – 140.4

Gerald Ford stepped into the role of president in August 1974, succeeding Richard Nixon following the infamous Watergate scandal. In the midst of his inauguration, Ford acknowledged the extraordinary circumstances, remarking, “I assume the presidency under extraordinary circumstances. This is an hour of history that troubles our minds and hurts our hearts.” As the 38th President of the United States, Ford relied on his considerable intelligence to guide America through these troubled times. His intelligence served as a valuable resource, enabling him to steer the nation back on track and restore a sense of stability. Ford’s presidency stands as a testament to his intellectual acumen and his ability to lead during challenging moments in history.

32. Lyndon B. Johnson – 140.6

Lyndon Johnson found himself thrust into the role of President following the tragic assassination of President Kennedy. Like his predecessor, Johnson shared a deep determination to send humans to the Moon, a goal he pursued with unwavering enthusiasm. However, his tenure also saw the troubling escalation of the Vietnam War and the pressing civil rights issues faced by African Americans. Despite these challenges, Johnson’s initial short stint as President didn’t deter him, and he secured a resounding victory in the 1964 election, earning another term in office.

31. Calvin Coolidge – 141.6

Calvin Coolidge rose to the presidency when Warren Harding passed away in 1923, having previously served as vice president. With his remarkable IQ, Coolidge demonstrated a sharp intellect throughout his political career. Before venturing into politics, he honed his smarts by studying law and even established his own law firm in 1898. Coolidge’s intellect and political acumen earned him a second term in the 1924 election, where he secured a convincing popular vote majority of 2.5 million. His brilliance shone both in the courtroom and in the Oval Office, leaving a notable mark on American history.

30. Herbert Hoover – 141.6

When Herbert Hoover delivered his inaugural presidential speech in 1929, he had already attained millionaire status through his successful ventures as a businessman. Despite his humble beginnings, with his father working as a blacksmith, Hoover’s intelligence shone brightly throughout his remarkable journey. However, it was his remarkable generosity that left an equally profound impact. Hoover selflessly donated his entire presidential salary to charitable organizations, garnering international recognition for his philanthropic endeavors. This selfless act exemplifies his commitment to making a positive difference in the lives of others. Hoover’s intelligence, coupled with his benevolent spirit, contributed to his legacy as a leader who not only excelled intellectually but also demonstrated a profound sense of compassion and giving.

29. Ronald Reagan – 141.9

Before his two presidential terms, Ronald Reagan made a name for himself in Hollywood, enjoying a successful career in the film industry. However, instead of extending his time on the silver screen, Reagan made a pivotal decision to enter politics and successfully secured the position of Governor of California. At the age of 69, Reagan defeated Jimmy Carter in the 1980 election, becoming the oldest person to assume the presidency at that time. Reagan is widely credited with the monumental achievement of contributing to the end of the Cold War with the Soviet Union, a remarkable feat in history.

28. Richard Nixon – 142.9

Richard Nixon’s presidency is characterized by a significant achievement: ending America’s military involvement in Vietnam. Regrettably, this accomplishment is often eclipsed by the infamous Watergate affair, which ultimately led to Nixon’s resignation, making him the sole president in history to step down from office. Nevertheless, it is crucial to acknowledge Nixon’s intellectual prowess that extended beyond the shadow of his controversial tenure. During his youth, he earned a scholarship to Harvard, showcasing his intelligence. Despite being unable to fully pursue an Ivy League education due to financial limitations, Nixon’s intellectual capabilities deserve recognition alongside the complexities of his legacy.

27. George H. W. Bush – 143

George H. W. Bush made history as the first member of his family to ascend to the presidency when he emerged victorious in the 1988 election. His intelligence played a significant role in his success. According to the White House website, Bush excelled both academically and athletically during his time at Yale. He captained the baseball team and was a member of Phi Beta Kappa, showcasing his talents in multiple arenas. Despite his notable abilities, Bush was unable to secure a second term, ultimately losing the election to Bill Clinton.

26. William McKinley – 143.4

William McKinley assumed the presidency as the 25th President of the United States in 1897. He is widely recognized in history as the leader who secured a significant victory for his country in the Spanish-American War. However, McKinley’s path to the presidency was shaped by diverse experiences. Before his political career, he pursued higher education and worked as a teacher during the tumultuous years of the American Civil War. Harnessing his intelligence, McKinley delved into the study of law and successfully established a private practice. Moreover, his strategic decision to marry a banker’s daughter showcased his astute judgment and resourcefulness. These qualities characterized both his personal life and his leadership style as President.

25. James K. Polk – 143.4

Before assuming the presidency in 1845, James K. Polk displayed his dedication as a student at the University of North Carolina. Like many aspiring politicians, he pursued a career in law before making his way to Washington, D.C. However, Polk’s true brilliance shone through with his strategic move following military action against Mexico. He skillfully negotiated the acquisition of California and New Mexico for the United States, securing these territories for a remarkably low price of just $15 million. This remarkable bargain undoubtedly stands as one of the most noteworthy deals in American history, highlighting Polk’s exceptional negotiation skills and his ability to maximize national interests.

24. Grover Cleveland – 144

In 1884, Grover Cleveland achieved a significant milestone as the first Democrat to win a presidential election since the Civil War’s end. Surprisingly, this victory was not the only one in his political career. Cleveland famously left the White House after his first term in 1889, but he made a remarkable return and served as president once again in 1893. Despite facing financial hardships that forced him to end his formal education at the age of 16, Cleveland persisted in part-time studies and eventually passed his bar exams, paving the way for his future leadership.

23. Donald Trump – 145

Donald John Trump, the 45th President of the United States, is a well-known figure in American politics. With an IQ estimated at 145, Trump is considered to possess a high level of intelligence. Before entering politics, he made a name for himself as a successful real estate developer and business magnate. During his presidency, Trump implemented various policies aimed at boosting the economy and protecting American interests. Known for his outspoken nature, his leadership style garnered both praise and criticism. Supporters credit him for his strong stance on immigration and trade, while critics point to controversies surrounding his administration. Trump’s high IQ of 145 is a testament to his intellectual capabilities and his significant influence on American politics.

22. Andrew Jackson – 145

Andrew Jackson, the seventh President of the United States, held office for two terms from 1829 to 1837. Despite his limited formal education in his youth, Jackson’s unwavering determination and intellect propelled him to become a highly respected lawyer in Tennessee, as mentioned on the White House website. However, it is essential to acknowledge that Jackson possessed a quick temper. In 1806, he engaged in a duel with an individual who had allegedly defamed his wife, tragically resulting in a fatal outcome when Jackson shot his opponent. This incident reflects both the fiery temperament of Jackson and his fierce loyalty toward his loved ones.

21. Dwight D. Eisenhower – 145.1

Dwight D. Eisenhower garnered widespread acclaim as the commander of the Allied forces, playing a pivotal role in the defeat of Hitler’s Nazis in Western Europe in 1945. Renowned for his extraordinary military acumen and remarkable intellect, Eisenhower emerged as one of the most accomplished military leaders of his era. Following his resounding victory in the 1952 presidential election, Eisenhower showcased his diplomatic finesse by skillfully negotiating a truce in the Korean War. His strategic efforts effectively halted the bloodshed, bringing much-needed relief to the conflict and demonstrating his aptitude for resolving complex international disputes. Eisenhower’s legacy encompasses his masterful leadership on both the battlefield and the diplomatic stage.

20. Benjamin Harrison – 145.4

Benjamin Harrison’s journey to the presidency in 1888 was marked by his exceptional skills as a lawyer. However, his accomplishments reached beyond the legal field even before assuming the highest office in the nation. During the Civil War, Harrison showcased his leadership abilities, rising to the rank of colonel within the Unionist forces. It is noteworthy that despite his achievements, the 23rd President of the United States won the election solely based on his victory in the Electoral College, despite losing the popular vote. This unique circumstance underscores the intricacies of the American electoral system and highlights the significance of the Electoral College in determining the outcome of presidential elections.

19. Martin Van Buren – 146

Martin Van Buren, who served as Andrew Jackson’s vice president for two terms, ascended to the presidency in 1837. Despite his relatively small stature, Van Buren earned the nickname “Little Magician.” Although he left school at the age of 14, Van Buren showcased his intellectual prowess by embarking on a law apprenticeship and successfully passing his bar exams. His dedication and commitment to his legal studies paved the way for his entry into public office. Van Buren’s ability to overcome obstacles and pursue his ambitions exemplifies his determination and intellect, leaving a lasting impact on his presidency and the nation’s history.

18. William Henry Harrison – 146.3

After defeating incumbent Martin Van Buren in the 1840 election, William Henry Harrison briefly served as the ninth president of the United States. Born into what the White House website describes as the “Virginian planter aristocracy,” Harrison enjoyed more privileges than most. However, he skillfully presented himself to the public as a “simple frontier Indian fighter, living in a log cabin and drinking cider.” It’s fascinating to note that Harrison held a degree in history and classics from Hampden-Sydney College, despite his portrayal as a man of humble origins.

17. Rutherford B. Hayes – 146.3

Rutherford B. Hayes emerged victorious in the 1876 election, a time when the wounds of the Civil War were still healing. Prior to his presidency, Hayes pursued a law degree at Harvard and actively fought for the Union in the Civil War, ultimately achieving the rank of brevet major general. Interestingly, Hayes stood out from the crowd by abstaining from alcohol, which perhaps contributed to his sharpness of mind. In fact, he went to the extent of prohibiting liquors and wines from the White House, a directive that his wife dutifully implemented.

16. Franklin Pierce – 147.4

In 1853, Franklin Pierce took office as the 14th President of the United States. Prior to his political career, Pierce, like many of his predecessors, had a background in law, having studied and practiced it. However, the beginning of Pierce’s presidency was marked by a profound personal tragedy. Shortly before his inauguration, his 11-year-old son tragically lost his life in a railroad accident. The devastating incident occurred while both the president and his wife were present on the train, casting a deep shadow over Pierce’s time in office. This personal tragedy undoubtedly had a profound impact on Pierce and influenced the course of his presidency.

15. John Tyler – 148.1

Following the untimely death of President William Henry Harrison, his vice president, John Tyler, stepped into the presidency, making history as the first individual to assume the highest office without being elected. This unique circumstance led to his political adversaries cruelly labeling him “His Accidency.” Tyler pursued his education at the College of William and Mary, where his focus on law became evident. It comes as no surprise that he later engaged in the field of law, which would shape his political career. Despite the challenges and criticisms he faced, Tyler’s unexpected ascent to the presidency left a lasting legacy, forever associating him with the distinctive nickname bestowed upon him by his detractors.

14. Millard Fillmore – 149

In 1850, Millard Fillmore assumed the presidency as the 13th president after the untimely death of his predecessor, Zachary Taylor, while in office. As a member of the Whig party, Fillmore holds the distinction of being the last president to hold office without being affiliated with either the Democratic or Republican parties. Fillmore’s early education was reportedly challenging, but his remarkable intelligence shone through. Despite the difficulties he faced, Fillmore showcased his high IQ by successfully gaining admission to the bar in 1823, signaling the beginning of his legal career.

13. Abraham Lincoln – 150

Abraham Lincoln will always be remembered as the man who signed the Emancipation Proclamation, bringing an end to slavery in the United States. However, his impact extends far beyond that historic moment. Leading the Union to victory during the Civil War, Lincoln demonstrated remarkable intelligence and unwavering resolve. It is truly astonishing that he rose to the highest office in the land with just 18 months of formal education. Lincoln’s legacy serves as a powerful reminder of the importance of education, determination, and the pursuit of justice in shaping a better society for all.

12. Franklin D. Roosevelt – 150.5

Franklin D. Roosevelt assumed the presidency during one of the most challenging periods in American history: the Great Depression. Fortunately, FDR’s intelligence and strategic thinking played a crucial role in steering the nation back on track. With an impressive academic background, having studied at both Harvard University and Columbia Law School, Roosevelt embarked on his path to the White House when he was elected to the New York Senate in 1910. However, his presidency faced further tests with America’s entry into World War II in 1941, demonstrating his leadership in the face of adversity.

11. Chester A. Arthur – 152.3

Chester A. Arthur, the son of an Irish immigrant, assumed the presidency in 1881 following the assassination of James Garfield. A graduate of New York State’s Union College, Arthur pursued a career in law and was admitted to the bar in New York City, adding to the list of lawyers who held the highest office in the country. Despite being diagnosed with terminal kidney disease within a year of becoming president, Arthur kept his condition hidden from the public. Unfortunately, he failed to secure the Republican nomination for the 1884 election, marking the end of his presidential aspirations.

10. James Garfield – 152.3

James Garfield, an accomplished politician with a remarkable career spanning 17 years in the House of Representatives, secured victory in the 1880 election to become the 20th President of the United States. What set Garfield apart was his impressive scholarly prowess, particularly his proficiency in Greek and Latin studies. Furthermore, during the Civil War, he fought valiantly for the Unionist cause and achieved the rank of brigadier general. Sadly, Garfield’s legacy took a tragic turn as he became one of the four American presidents to be assassinated while serving in office. His untimely demise left an indelible imprint on the nation’s history, cutting short the promising leadership of a remarkable individual.

9. Theodore Roosevelt – 153

In September 1901, Theodore Roosevelt stepped into the role of President of the United States at the youthful age of 42, following the tragic assassination of President William McKinley. Recognized as the youngest president in history, Roosevelt’s academic accomplishments were noteworthy, having graduated with honors from Harvard University and pursued advanced studies in law at Columbia. Affectionately known as Teddy, he also garnered fame for his valiant service as the leader of the Rough Riders during the Spanish-American War. Roosevelt’s charismatic leadership and notable achievements resonated deeply with the American public, resulting in his re-election for a second term in the 1904 election. Throughout his presidency, he embodied dynamism and left an enduring legacy as a remarkable leader.

8. John Adams – 155

John Adams, renowned as the first vice president under George Washington, ascended to become the second president of the United States. While his political achievements were notable, it was his intellectual brilliance and philosophical acumen that truly set him apart. Regarded by the White House website as a political philosopher of great eminence, Adams’s dedication to scholarly pursuits was evident throughout his life. He displayed a remarkable intellect from his early days as a diligent student, earning a scholarship to the prestigious Harvard University and later attaining a master’s degree. Adams’s profound contributions as a political thinker not only shaped his own legacy but also left an enduring imprint on the nation he served with distinction.

7. Woodrow Wilson – 155.2

Woodrow Wilson’s presidency unfolded amidst the stormy years of World War I. At first, Wilson pursued a policy of neutrality for the United States, but in 1917, he made a memorable declaration, committing America to join the war in order to “make the world safe for democracy.” Although Wilson’s intellectual prowess was widely acknowledged, his early educational journey was marked by difficulties. Some conjecture that he may have grappled with dyslexia, which could shed light on his academic struggles. Nonetheless, Wilson’s leadership during this trying period in history remains significant, as he steered the nation through the challenges of war and sought to promote democratic ideals on a global scale.

6. James Carter – 156.8

Before assuming the presidency in 1976, Jimmy Carter embarked on a remarkable path. He attended the esteemed Naval Academy in Annapolis, Maryland, where he graduated in the top 10 percent of his class, demonstrating his intellectual capabilities. Following seven years of dedicated service in the U.S. Navy, Carter faced a pivotal moment when he took over his family’s peanut farm in Georgia after his father’s passing. However, despite his intelligence and accomplishments, Carter fell short of securing a second term as president. His presidency was overshadowed by the Iran hostage crisis, which found resolution during Ronald Reagan’s tenure. Nevertheless, Carter’s journey from the Naval Academy to the peanut farm remains an intriguing chapter in American history.

5. William J. Clinton – 159

Bill Clinton’s presidency is synonymous with a period of remarkable prosperity in the United States. Throughout his two terms, the nation enjoyed low unemployment and inflation, leaving an indelible mark on the economy. Even before his victory in the 1992 election, Clinton’s academic achievements were evident. He earned a prestigious Rhodes Scholarship to the University of Oxford, showcasing his exceptional intelligence and potential. However, Clinton’s presidency was not without its challenges. The affair with intern Monica Lewinsky cast a dark shadow over his tenure and tarnished his legacy. Despite the achievements and the economic prosperity, Clinton’s presidency will always be remembered for the scandal that unfolded during his time in office.

4. John F. Kennedy – 159.8

John F. Kennedy’s ascent to the presidency at the tender age of 43 firmly established him as one of the youngest leaders to occupy America’s highest office. Yet, in his earlier years, Kennedy’s academic pursuits did not reflect his future achievements. Biography.com reveals that as a young boy, JFK was not known for his studious nature, often getting into trouble and prioritizing sports, girls, and practical jokes over coursework. However, as time went on, Kennedy redirected his focus and applied himself diligently. Despite his tragically abbreviated presidency, his brief time in office continues to be highly esteemed, leaving an enduring legacy that resonates to this day. Kennedy’s journey serves as an inspiring example of personal growth and transformation.

3. Thomas Jefferson – 160

Thomas Jefferson, one of the esteemed Founding Fathers, assumed the presidency in 1801 as the third president of the United States. He was a man of strong principles, evident in his powerful words penned before his election victory: “I have sworn upon the altar of God eternal hostility against every form of tyranny over the mind of man.” Renowned as one of America’s most well-educated lawyers, Jefferson’s remarkable intellect shone through. His exceptional IQ contributed to his deep understanding of governance and his significant contributions to shaping the nation’s future.

2. James Madison – 160

Following Thomas Jefferson, James Madison ascended to the presidency after winning the 1808 election, and he served for two terms. Despite grappling with poor health throughout his life, Madison pursued his education at his family’s Virginia estate before enrolling at the College of New Jersey, presently known as Princeton University. Revered as the “Father of the Constitution,” Madison’s exceptional dedication and meticulous efforts in drafting this fundamental document showcased his unwavering commitment to the principles and governance of the nation. Madison’s visionary leadership and instrumental role in shaping the Constitution solidified his place in history as a key architect of the United States’ foundation and governance.

1. John Quincy Adams – 175

John Quincy Adams, the eldest son of the second president John Adams, emerged victorious in the 1824 election, becoming the sixth President of the United States. Notably, Adams possessed an extraordinarily high IQ, which undoubtedly aided him in his presidential duties. His intellectual prowess extended beyond English, as he was fluent in Dutch, French, and German. Adams also attended Harvard University, a testament to his exceptional intellect. The history of American presidents reveals a notable trend of intellectual brilliance, as observed by Professor Simonton. However, history class might not have uncovered some of the intriguing secrets, scandals, and bizarre incidents surrounding these leaders, which are often left untold.

While there is no definitive way to measure intelligence, it is fascinating to explore the potential IQs of American presidents. From the towering intellect of Thomas Jefferson to the sharp wit of John F. Kennedy, each president brought their unique strengths and weaknesses to the most powerful office in the world. While IQ is just one factor that contributes to a successful presidency, it is certainly worth considering when evaluating their overall legacy.