What does an IQ of 115 mean?

Last updated 1 August 2026

An IQ of 115 falls in the high average band of the standard scale, at approximately the 84th percentile — as high as or higher than about 84% of the population. About 1 in 6 people score 115 or higher. Here is what that actually means, and just as importantly, what it does not.

What percentile is an IQ of 115?

Is 115 a good IQ score?

Yes, on any reasonable reading. It sits in the high average band, above roughly five people in six, and comfortably above the threshold most people have in mind when they ask the question. It is not rare enough to open doors on its own — it is short of the Mensa threshold of 130 by a full standard deviation — but it is a genuine cognitive advantage rather than a statistical rounding error.

The more useful framing is that 115 buys you a discount on abstract material rather than a different category of mind. What you do with that discount matters considerably more than the fifteen points.

The score in context

IQ scores sit on a scale constructed with a mean of 100 and a standard deviation of 15. A score of 115 therefore sits 1.00 standard deviations from the population average. About 68% of people score between 85 and 115, and 95% between 70 and 130 — the further from 100 a score sits, the faster the surrounding population thins out.

Scored close to 115 rather than exactly on it? Anything from 113 to 117 reads essentially identically: the gap is inside a single test's margin of error, so everything on this page — the classification, the percentile region, and the interpretation — applies across an IQ of 113, 114, 115, 116 or 117 alike.

What this band looks like in practice

Scores from 110 to 119 form the high average band: clearly above the population midpoint, reached by roughly one person in six. This is the band where cognitive advantage becomes noticeable in daily life without being rare — the colleague who picks up new systems a bit faster, the student for whom exams were never quite the struggle they were for others.

This band is heavily represented among university graduates and in professional and technical work. The demands of most degrees and most cognitively engaging careers sit comfortably within reach here — the ceiling on what people in this band achieve is set almost entirely by the non-cognitive traits: diligence, curiosity, and follow-through.

One useful calibration: the difference between this band and the average band is real but modest in any single interaction — it shows up statistically over years of learning and problem solving, not as some visible gulf in conversation. People routinely misjudge the band others sit in, in both directions, which says something about how little a dozen IQ points determines the texture of a person.

Playing to the strengths of this band

A high average score typically means abstract material comes a little cheaper than it does for most people — the same hour of study buys slightly more. The strategic implication is to spend that discount somewhere it compounds: technical depth, a profession with a long learning curve, or the kind of role where you are paid to get up to speed on unfamiliar problems. The classic trap of this band is coasting — school was manageable without much technique, so technique was never built, and the deficit surfaces later when material finally gets hard. People in this band who add the study habits of someone who had to fight for everything routinely outperform higher scorers who never did.

How 115 compares with the anchor scores

The standard deviation anchors — 70, 85, 100, 115, 130, 145 — are the reference points every chart is built on. Here is 115 placed among them.

How much to trust a score of 115

Every IQ measurement carries error. Professionally administered tests report a confidence band of several points around any score, and single online sittings are noisier still: fatigue, distraction, rushing, or unfamiliarity with matrix puzzles can move a result meaningfully in either direction. The sensible reading of a 115 is "somewhere in the high average region, give or take" — a good estimate, not a serial number.

The percentile is the part worth remembering. Scores can be rescaled; the fact of performing at roughly the 84th percentile of the comparison population is the stable, plain-English content of the result. When comparing results across different tests, always compare percentiles, never raw numbers, because different tests norm against different populations.

115 on other scales

Different tests have historically used different standard deviations, so the same underlying performance carries different numbers on different scales. A modern SD 15 score of 115 corresponds to approximately 116 on the older SD 16 Stanford-Binet convention and 124 on the SD 24 Cattell scale — identical percentile, different arithmetic. This is why comparing raw numbers across tests misleads, and why every comparison should run through percentiles.

Getting the most from a matrix reasoning test

If you plan to test or retest, a few things measurably help performance without gaming anything: take it rested and undistracted, since working memory is the first casualty of fatigue; read each grid row by row and column by column, naming the rule to yourself before looking at the options; and manage the clock — early questions should take seconds, banking time for the multi-rule items at the end where the discrimination between scores actually happens. Guessing carries no penalty on this test, so never leave a question unanswered as time runs out. And space any retest by weeks rather than hours: immediate retakes inflate scores through memory of specific items, which tells you nothing new.

What a single number leaves out

One score compresses many abilities. Verbal reasoning, spatial visualisation, working memory, and processing speed correlate, but imperfectly — two people at 115 can have quite different cognitive profiles, and most people have a spread of 10 to 20 points between their strongest and weakest domains. A matrix reasoning score specifically targets the fluid, pattern-based core of ability that correlates most strongly with the general factor, which is why single-format tests of it are meaningful — but no single number is a full portrait of a mind, at 115 or anywhere else.

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