What does an IQ of 144 mean?
At the upper end on the reference scale, at approximately percentile 99.83.
- IQ score
- 144
- Percentile
- 99.83
- At or above
- 0.17%
Normal reference · mean 100 · SD 15. These are calculated values, not observed starp population ranks.
Where 144 sits on the IQ scale
A score of 144 is 44 points above the mean. Dividing by the standard deviation gives (144 − 100) ÷ 15 = 2.93. The normal cumulative distribution converts that standardized position into percentile 99.83.
This is at least two standard deviations above the mean. Only a small upper share of the model lies at or beyond this point. At this end of a scale, the test ceiling, norms and reported uncertainty deserve particular attention.
How common is a score of 144?
Approximately 0.17% of this model lies at or above 144—about 1 in 596. This is a cumulative share, not the chance of scoring exactly 144. A continuous model does not assign a positive probability to one exact value.
Compared with IQ 130, the reference percentile is 2.11 percentage points higher. Equal IQ-point gaps do not create equal percentile gaps: the middle of the bell curve contains more area than its ends.
Compare nearby scores
Compare 139 and 144 or calculate 144 on another scale. A small difference between test results is not automatically a meaningful change.
How this relates to starp
starp's current 30-question scoring map produces 144 from 30 correct answers (100% correct). That accuracy percentage is different from the normal-model percentile above. The scoring map was calibrated with 12,700 simulated assessments; it is not population norming.
See the scoring method and how raw scores differ from IQ estimates.
Questions about IQ 144
Is 144 a good IQ score?
144 is above the reference mean of 100. It is a higher score on that scale, but a number alone cannot establish a specific skill profile or predict success.
What percentile is an IQ of 144?
On a normal scale with mean 100 and standard deviation 15, 144 corresponds to approximately percentile 99.83. Around 0.17% of that model lies at or above it. Use an assessment's own norms for an actual reported rank.
Does an IQ of 144 mean 144% correct?
No. IQ is a scaled score. Percentage correct depends on the questions and scoring rules; percentile describes a relative position. These three quantities are not interchangeable.
Method: NIST's normal-distribution formula. Percentiles here are calculated reference values, not observed starp population ranks. About starp scoring.