IQ, or Intelligence Quotient, is one of the most widely recognized measures of cognitive ability. But what exactly constitutes a “good” IQ score? Understanding the IQ scale can help you interpret your results and appreciate the nuances of intelligence measurement.

Understanding the IQ Scale

Modern IQ tests are standardized so that the average score is 100, with a standard deviation of 15 points. This means that approximately 68% of the population scores between 85 and 115, and about 95% scores between 70 and 130.

IQ Range	Classification	Population %
130+	Very Superior	~2.2%
120–129	Superior	~6.7%
110–119	High Average	~16.1%
90–109	Average	~50%
80–89	Low Average	~16.1%
70–79	Borderline	~6.7%
Below 70	Extremely Low	~2.2%

So, What Is “Good”?

While “good” is subjective, most psychologists consider a score of 110 or above to be above average, placing you in roughly the top 25% of the population. A score of 120 or higher is considered “superior” intelligence, and 130+ puts you in the “gifted” range — the top 2% of the population.

What Affects IQ Scores?

🧬 Genetics

Research suggests that genetics account for 50-80% of the variation in IQ scores among adults.

📚 Education

Access to quality education and stimulating environments can positively influence cognitive development.

🥗 Nutrition & Health

Proper nutrition, especially during childhood development, plays a significant role in cognitive ability.

🧘 Environment

Stress levels, sleep quality, and overall mental health can impact test performance and cognitive function.

Important Caveats

It's important to remember that IQ tests measure specific types of cognitive abilities — primarily logical reasoning, pattern recognition, and processing speed. They don't capture the full spectrum of human intelligence, including emotional intelligence, creativity, practical skills, or wisdom. A single number cannot define a person's worth or potential.

“Intelligence is not just about IQ. It's about curiosity, creativity, and the ability to adapt. The most successful people are those who never stop learning.”

What Is a Good IQ Score? A Complete Guide