An IQ of 125 sits in the superior range on the Stanford-Binet and Wechsler scales. It is approximately the 95th percentile — meaning that 95% of the general population scores at or below this level, and 5% scores above.
The mean IQ is 100 by definition; the standard deviation is 15. So a score of 125 is 1.67 standard deviations from the mean.
What it tells you, and what it does not
An IQ score is a snapshot of cognitive ability at the time of testing. It correlates with academic performance, job complexity, and certain measures of life outcomes — but the correlation is far weaker than the popular imagination suggests. Roughly half of the variance in life outcomes is explained by factors entirely unrelated to IQ: persistence, conscientiousness, social ability, health, opportunity, and luck.
Alfred Binet treated the score as a question rather than a verdict. That framing has aged better than the alternative.
Career and educational fit
A score of 125 is consistent with specialist physicians, partners at firms, senior software engineers, principal investigators in mid-tier research.
None of these are deterministic. People with the score described above out-perform expectations regularly, and people with much higher scores under-perform regularly.
The same total score, very different profiles
An IQ of 125 is a summary number. The five-factor profile is what it actually means.
Two people who both score 125 on the Full-Scale IQ can have completely different cognitive profiles. One might be at 140 on Innate Intelligence and 110 on Working Memory. The other might be the opposite. The summary score is identical. The lived experience of having that mind is not.
This is the part of the modern Stanford-Binet that the old single-number IQ obscured, and the part that our online assessment reports back to you alongside the total.
Can the score change?
Yes, in some directions and within some bounds. Working memory and processing speed move with sleep, stress, and physical health. Knowledge moves steadily with reading and exposure. Innate Intelligence is the most stable factor in adulthood, and even it shows real movement over years of cognitively demanding work.
People who re-test on a different day, or after a period of meaningful change in their lives, often see their score shift by 5 to 15 points.
Curious where you score, and what your factor profile looks like?
Take the Stanford-Binet Online35 to 45 minutes · Full-Scale IQ + five factor indices · From $49Read more: about Alfred Binet · the five factors explained · online vs. clinical Stanford-Binet
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