IQ CLASSIFICATIONS
Understanding IQ score ranges: what each classification means, how rare it is, and what it implies for cognitive abilities and career potential.
IQ Classification Quick Reference
| Classification | IQ Range | Percentile | Rarity | |
|---|---|---|---|---|
| Genius Level | 140-159 | 99.6th-99.99th | 1 in 250-1,000 | Details |
| Gifted | 130-139 | 98th | 1 in 50 | Details |
| Superior | 120-129 | 90th | 1 in 10 | Details |
| High Average | 110-119 | 75th | 1 in 4 | Details |
| Average | 90-109 | 25th-75th | 1 in 2 | Details |
| Low Average | 80-89 | 9th-25th | 1 in 6 | Details |
| Borderline | 70-79 | 2nd-9th | 1 in 16 | Details |
| Mild Intellectual Disability | 55-69 | Below 2nd | 1 in 50 | Details |
| Profoundly Gifted | 160+ | 99.997th | 1 in 30,000 | Details |
Explore Each Classification
Cognitive ability at this level allows for the synthesis of extremely complex, abstract concepts. Individuals here often make significant contributions to science, philosophy, or art.
Superior intelligence. These individuals are often the "smartest in the room" in standard settings. They excel academically and professionally.
High intelligence. Capable of handling complex professional tasks with ease. Learn faster than the general population.
Above average cognitive ability. Can handle college-level work and most skilled professions.
Normal cognitive ability. This is where 50% of the population falls. Capable of high school graduation and entry-level skilled work.
Below average but within normal limits. May struggle with abstract concepts but can complete high school and perform well in structured roles.
Borderline intellectual functioning. Academic challenges are common but independent living and semi-skilled work are achievable with support.
Mild intellectual disability. Most individuals in this range can learn practical life skills and achieve limited academic proficiency.
Extraordinarily rare cognitive ability. These individuals operate at levels that are difficult for even gifted individuals to comprehend.
Understanding IQ Distribution
The Bell Curve
IQ scores follow a normal distribution with a mean of 100 and standard deviation of 15. This means about 68% of the population scores between 85-115, and 95% scores between 70-130.
- 68%Score between 85-115
- 95%Score between 70-130
- 99.7%Score between 55-145
What IQ Measures
IQ tests measure cognitive abilities including pattern recognition, spatial reasoning, logical thinking, and problem-solving speed. IQ is one aspect of intelligence and does not capture creativity, emotional intelligence, or practical wisdom.
Test Your IQ →