Is 151 a Good IQ Score?
A score of 151 falls in the Very Superior range, among the rarest results on the standard scale. Scores this high represent exceptional performance across reasoning categories, roughly about 1 in 2,968 people score this high or higher in a general population sample. This range is often associated with eligibility for high-IQ societies, though formal admission requires a proctored, standardized assessment rather than a free online test.
The Statistics Behind This Number
This page uses the standard normal distribution model (mean 100, standard deviation 15) applied to a general population, the same convention used across most published cognitive assessments. It is a statistical model of population-level distribution, not a measurement of any specific individual or group. Your own result from our free IQ test is calculated the same way; see the full methodology for the formula.