What Is a Good IQ Score?

"What is a good IQ score?" is one question disguised as another. Almost everyone asking it is really asking one of three different things: is my score enough to do what I want to do?, where do I rank?, or — honestly — is my score impressive? This guide answers all three.

Most articles on this question dodge it with safety language ("IQ isn’t everything!") and a band table. The honest answer is more useful, more nuanced, and depends on what you’re trying to do.

The question behind the question

"Good" only means something against a goal. A 105 IQ is wonderfully good for managing daily life, comfortably enough for most jobs, and probably not enough to thrive in a top-tier physics PhD program. Same number, three different verdicts. Before you can answer "is my score good?" you need to know what you want it to be good for.

This article walks through six distinct meanings of "good": daily functioning, education, career, social comparison, statistical rarity, and what your true score might be (which is rarely the digit on the page). Skip to whichever applies to you.

The scale, in two sentences

IQ tests are calibrated so the population mean is exactly 100, with a standard deviation of 15. That means an IQ of 115 puts you at roughly the 84th percentile, 130 puts you at the 97.7th percentile, and 70 puts you at the 2.3rd percentile — the percentile cutoffs are determined by mathematics, not by the test. (For the full mechanics, see our guide to what an IQ score means.)

Hold this table loosely. The percentiles are exact; the labels different organisations attach to them ("Superior", "Gifted", "Genius") are interpretive. For the full classification scheme, see our IQ classification ranges guide.

Good for daily life

For just functioning — managing money, navigating bureaucracy, holding most jobs, learning new procedures, raising children — the threshold is far lower than people assume. Roughly 85 covers most of adult life comfortably. Linda Gottfredson’s 1997 work on occupational complexity showed that the cognitive demands of unskilled and semi-skilled occupations are met at IQ levels in the 80s and 90s; complications start to appear systematically only below the mid-70s.

That means roughly 84% of the population — everyone above the 16th percentile — is comfortably "good" by this definition. If your only goal is daily functioning, almost any IQ above 85 is good enough, and the differences above that point are dwarfed by personality, motivation, and circumstance.

Good for college and graduate school

Education sorts more sharply. Strenze’s 2007 meta-analysis of 35 longitudinal studies found IQ predicts educational attainment at r ≈ 0.5 — one of the highest correlations in the entire IQ-outcome literature. That means at the population level, IQ does substantial work in determining who finishes which level of schooling, even controlling for parental income.

Approximate operating thresholds, drawn from longitudinal cohort data:

• High-school completion: reliable above ~95.
• Four-year college completion: typical comfortable range ~110+. People below this can and do graduate, but the workload is steeper relative to peers.
• Selective university: ~120+. Median admitted student at top-50 US universities falls in this range.
• STEM PhD or top-tier doctoral programmes: ~125–130+. Lubinski and colleagues’ longitudinal SMPY data shows clear sorting at this threshold for advanced quantitative work.

These are population averages, not entrance gates. Plenty of individuals succeed below the typical range through grit, support, or domain-specific strengths. The thresholds describe statistical comfort, not capability.

Good for specific careers

For occupational performance, the picture is more granular. Schmidt & Hunter’s 2004 meta-analysis — the most cited paper in personnel research — found that the predictive power of IQ for job performance scales with job complexity. The more cognitively demanding the role, the more an IQ score predicts who succeeds in it.

The signal is real but it is also probabilistic. The bottom of each band still contains many high performers; the top of each band still contains people who struggle. IQ contributes roughly 25% of the variance in performance for top-tier complex jobs and as little as 5–10% for routine work. The rest is personality (especially conscientiousness), domain knowledge, social skill, and luck.

Good for "impressive"

This is the question most people are actually asking and most articles refuse to answer directly. So:

• Above 115 (top 16%) is mildly above average. Common enough that you’ll meet several people in any large room with a similar score.
• Above 130 (top 2.3%) is genuinely uncommon. This is the Mensa cutoff and the conventional psychometric definition of "gifted". A score in this range earns the label without qualifications.
• Above 145 (top 0.13%) is rare in any practical sense. Out of every 1,000 people you meet, statistically one or two will be in this range.
• Above 160 (top 0.003%) is the territory of single individuals out of tens of thousands. Most modern tests don’t measure reliably this high; reported scores above 160 are extrapolations.

An honest read: if your score is between 100 and 130, almost everyone you meet professionally is statistically likely to be in your range or higher. The score isn’t doing much sorting at this level. Above 130, you start being rare. Above 145, you’re properly rare.

The standard-error reality check

Here is the part most popular IQ articles skip. An IQ score is not a point. It is the centre of a confidence interval.

The standard error of measurement on a clinical IQ battery (WAIS-IV) is approximately ±3 points at the 95% confidence level. On a well-designed online IQ test, it is closer to ±5 to ±7 points. That means:

• A reported clinical IQ of 122 means your true score is somewhere in the range 119–125 with 95% confidence.
• A reported online IQ of 122 means your true score is somewhere in the range 115–129.
• The difference between a reported 119 and a reported 121 is statistical noise. They are the same score.

If you scored below average

Most articles on this topic implicitly address only readers who scored above 100. That is a strange omission given that, by definition, half the population scores below it. So directly:

An IQ in the 80s or 90s is functionally adequate for most adult life, including most occupations, most relationships, and most everyday cognitive demands. The score is a probabilistic prediction; it is not a verdict on your capability or worth.

A few things worth knowing if you scored below your sense of your own ability:

• State factors are real depressors. Sleep deprivation reduces IQ-test performance by 5–10 points (Killgore 2010). Anxiety, hangover, untreated ADHD, and time-of-day effects all measurably suppress scores. A first low result on an unfamiliar test under poor conditions is not a fixed verdict.
• Profiles vary. Two people with the same composite IQ can have very different domain breakdowns — strong verbal but weak working memory, or strong spatial but weak verbal. The composite hides the shape. A domain breakdown is more informative than a single number.
• The score predicts more on the low side than the high side. This is the asymmetry covered in our guide to what your IQ score means: below ~85 the score acts as a real cognitive floor; in the 85–100 band it is a soft constraint compensable by conscientiousness, social skill, and domain depth. The further below 100, the more the score matters; the further above 100, the less.

Score-by-score, honestly

For readers who came here looking for a direct answer to "is my specific score good?" — here is the honest version.

What to actually do with your number

Three honest pieces of advice, depending on where you landed:

If your score was below your sense of your own ability: investigate state factors first. Re-test rested, undistracted, on a different day. If the second result confirms the first, look at the domain breakdown rather than the composite. Strong domains balance weaker ones; the headline number isn’t the whole story.

If your score is in the broad average band (90–120): the score isn’t the lever. Almost every life outcome from this band onward is dominated by what the score doesn’t measure: persistence, social skill, domain expertise, and the willingness to do hard work consistently. The most useful thing the test told you is probably your domain profile, not your composite.

If your score is above 130: congratulations on the rare cognitive baseline. The risk in this band is mistaking the baseline for the achievement. Above 120, additional IQ contributes very little to creative or professional success (Simonton 2009); what differentiates outcomes is sustained engagement, domain depth, and the discipline to do unfashionable work for long periods. The number is a signal, not a destination.

Frequently asked questions

Related reading

• What Your IQ Score Actually Means — the 100-point scale, what it predicts, and the asymmetry between low- and high-end effects.
• IQ Classification Ranges — the full Wechsler classification scheme and cross-scale comparison.
• Average IQ by Age — why the average IQ is 100 in every age group, and what changes underneath.
• Can You Improve Your IQ? — what reliably moves the needle and what just sells brain-training apps.
• IQ vs EQ — how cognitive intelligence compares to emotional intelligence, and where each one carries the most signal.

References

1. Strenze, T. (2007). Intelligence and socioeconomic success: A meta-analytic review of longitudinal research. Intelligence, 35(5), 401–426.
2. Schmidt, F. L., & Hunter, J. E. (2004). General mental ability in the world of work: Occupational attainment and job performance. Journal of Personality and Social Psychology, 86(1), 162–173.
3. Gottfredson, L. S. (1997). Why g matters: The complexity of everyday life. Intelligence, 24(1), 79–132.
4. Hunt, E. (2011). Human Intelligence. Cambridge University Press.
5. Simonton, D. K. (2009). Genius 101. Springer.
6. Lubinski, D. (2009). Exceptional cognitive ability: The phenotype. Behavior Genetics, 39(4), 350–358.
7. Killgore, W. D. S. (2010). Effects of sleep deprivation on cognition. Progress in Brain Research, 185, 105–129.
8. Wechsler, D. (2008). Wechsler Adult Intelligence Scale — Fourth Edition (WAIS-IV) Technical and Interpretive Manual. Pearson.
9. Kuncel, N. R., & Hezlett, S. A. (2007). Standardized tests predict graduate students' success. Science, 315(5815), 1080–1081.