Superior IQ: 120 to 129

An IQ of 120 to 129 is classified as superior. About 6.8% of people score in this range, roughly 1 in 15, and an IQ of 120 is higher than about 91% of people.

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90.9th to 97.7th
Percentile
1 in 15
6.8% of people
Superior
WAIS-IV label
70100130averageIQ 120 to 129
Superior: 6.8% of people

What an IQ of 120 to 129 means

The range runs from the 91st to the 98th percentile. The WAIS-IV calls it superior; the WISC-V and WAIS-5 call it very high.

People here tend to learn quickly, follow complex arguments easily and do well on demanding academic courses.

Common characteristics

  1. Good logical reasoning

    Multi-step problems and abstract arguments are handled comfortably.

  2. Adaptable

    New tools, rules and subjects are learned without much difficulty.

  3. Clear communication

    Strong verbal reasoning often shows up as an ability to explain complicated ideas simply.

Work and everyday life

People in this range are well represented in professional fields such as law, medicine, engineering, finance and research, and in senior technical and leadership roles.

At this level the score is rarely the limit. Knowledge, experience, conscientiousness and people skills usually decide how far someone goes.

What the label does not tell you

Superior is a high score but not a rare one: about 1 in 11 people score 120 or more. Many gifted programmes start at 130, so a result in this range could land either side of a cutoff on a different day.

IQ classifications are statistical bands on a scale with a mean of 100 and a standard deviation of 15. Individual abilities vary a lot within each band, and intelligence is one factor among many in how life turns out.

What the research says

Schmidt and Hunter (1998) found general mental ability to be one of the strongest single predictors of job performance and training success, especially in complex jobs. It still explains only part of the difference between people.

Labels differ between tests. This range is called superior on the WAIS-IV, very high on the WISC-V and superior on the Stanford-Binet 5. The classifications overview compares the systems, and the IQ chart lists each score range with its percentile.

Superior IQ: common questions

What does an IQ of 120 to 129 mean?

An IQ of 120 to 129 is classified as superior. About 6.8% of people score in this range, roughly 1 in 15, and an IQ of 120 is higher than about 91% of people. People here tend to learn quickly, follow complex arguments easily and do well on demanding academic courses.

What jobs suit people with an IQ of 120 to 129?

Most professional fields, including law, medicine, engineering, finance and research, plus technical and leadership roles.

How rare is an IQ of 120 to 129?

About 6.8% of people score 120 to 129, or roughly 1 in 15. In a room of 100 random people you would expect about 7 in this range.

What are the characteristics of Superior intelligence?

Common markers include: good logical reasoning, adaptable, clear communication. These describe tendencies across groups of people, not rules for any one person.

Can IQ in the 120 to 129 range be improved?

Not by much, for most adults. Scores are fairly stable after childhood. Each extra year of education adds roughly 1 to 5 points on average (Ritchie and Tucker-Drob, 2018), and practising one test raises scores on that test, but no method reliably raises general intelligence by a large amount. Sleep, health, stress and testing conditions all move a single result by a few points.

What are the limitations of an IQ of 120 to 129?

Superior is a high score but not a rare one: about 1 in 11 people score 120 or more. Many gifted programmes start at 130, so a result in this range could land either side of a cutoff on a different day.

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Sources

  1. Wechsler, D. (2008). Wechsler Adult Intelligence Scale, Fourth Edition (WAIS-IV). Pearson.
  2. American Psychiatric Association (2022). Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR).
  3. Gottfredson, L. S. (1997). Why g matters: The complexity of everyday life. Intelligence, 24(1), 79-132.
  4. Hunter, J. E., & Schmidt, F. L. (1996). Intelligence and job performance: Economic and social implications. Psychology, Public Policy, and Law, 2(3-4), 447-472.
  5. Schmidt, F. L., & Hunter, J. E. (1998). The validity and utility of selection methods in personnel psychology. Psychological Bulletin, 124(2), 262-274.
  6. Lubinski, D. (2009). Cognitive epidemiology: With emphasis on untangling cognitive ability and socioeconomic status. Intelligence, 37(6), 625-633.
  7. Terman, L. M., & Oden, M. H. (1959). The Gifted Group at Mid-Life. Stanford University Press.
  8. Lubinski, D., & Benbow, C. P. (2006). Study of Mathematically Precocious Youth after 35 years. Perspectives on Psychological Science, 1(4), 316-345.
  9. Ritchie, S. J., & Tucker-Drob, E. M. (2018). How much does education improve intelligence? A meta-analysis. Psychological Science, 29(8), 1358-1369.

Percentages use a normal distribution with mean 100 and standard deviation 15. Methodology