What does an IQ of 115 mean?
Above the average on the reference scale, at approximately percentile 84.13.
- IQ score
- 115
- Percentile
- 84.13
- At or above
- 15.87%
Normal reference · mean 100 · SD 15. These are calculated values, not observed starp population ranks.
Where 115 sits on the IQ scale
A score of 115 is 15 points above the mean. Dividing by the standard deviation gives (115 − 100) ÷ 15 = 1. The normal cumulative distribution converts that standardized position into percentile 84.13.
This lies in the upper half of the central 85–115 interval. It is above the scale mean, but the total alone does not identify a particular strength in memory, numbers or spatial reasoning.
How common is a score of 115?
Approximately 15.87% of this model lies at or above 115—about 1 in 6. This is a cumulative share, not the chance of scoring exactly 115. A continuous model does not assign a positive probability to one exact value.
IQ 115 is a reference point 1 standard deviations from the mean. 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 110 and 115 or calculate 115 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 115 from 25 correct answers (83.33% 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 115
Is 115 a good IQ score?
115 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 115?
On a normal scale with mean 100 and standard deviation 15, 115 corresponds to approximately percentile 84.13. Around 15.87% of that model lies at or above it. Use an assessment's own norms for an actual reported rank.
Does an IQ of 115 mean 115% 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.