IQ 135

135 is in what is usually called the gifted range, 2.33 standard deviations above average. You would outscore 99% of people, and only about 1 in 102 score this high or higher. It sits 5 points past the 130 mark and 10 short of 145.

Gifted is an education label, not a medical one. Schools and programmes set their own cutoffs, often around 130, and many use several measures rather than a single score.

The Study of Mathematically Precocious Youth followed children identified in roughly the top 1% of reasoning ability. As adults they earned doctorates, patents and senior roles at rates far above the general population.

Mensa, the best-known high-IQ society, accepts people who score at or above the 98th percentile on an approved, supervised test. On a scale with a standard deviation of 15 that line is usually quoted as 130, so 135 is 5 points above it. LifeScore is not affiliated with Mensa, and online results, including ours, are not accepted as evidence.

Near the line, the margin of error matters. A single result of 135 is consistent with anything from about 130 to 140, so a supervised retest would very likely still clear 130.

Joining a society is optional. The more useful thing a score like this offers is a nudge to seek out harder problems and people who enjoy them.

What does a 135 feel like from the inside? Accounts vary a lot, but a few themes come up again and again:

• You often see where an argument or a puzzle is going before it is finished.
• Group work can be frustrating when others need more steps than you do, which makes explaining your reasoning a skill worth building.
• Routine work can get boring fast, so variety and challenge tend to matter.

On a bell curve with a mean of 100 and a standard deviation of 15, about 0.98% of people score 135 or higher. Applied to whole populations:

An IQ of 135 or higher is 2.3 times rarer than 130 or higher, and 140 or higher is 2.6 times rarer again. At this point on the curve, each extra point makes a score about 20% rarer.

What your 135 could really be. Treat any single score as the centre of a range. For a good supervised test, about 5 points either side is typical, so 135 really means somewhere from 130 to 140. Online tests are less precise than that.

Which scale was it on? A 135 reported on an SD 16 scale converts to about 133 on the usual SD 15 scale, and one from an SD 24 scale (seen in some Cattell-style results) to about 122. Check which scale your score report used.

The gifted range is where many retrospective estimates for historical leaders, writers and activists land. These sit near 135, with the figures people look up most listed first. Treat these as informed guesses from biographies rather than results. Each profile sets out what its estimate rests on.

Rough benchmarks from our profiles that sit within a few points of 135. Degree and university figures are estimates derived from admissions-test averages, not measured IQs.

135 is almost exactly the top 1% line, about 1 in 102 people. It is the level Intertel, a high-IQ society, asks for.

At this level some learners benefit from enrichment or acceleration, but good educational placement uses several measures, not just the headline score. Elite-university IQ averages that circulate online are rarely based on representative testing.

The scores one and five points either side of 135, plus the round numbers from 100 to 150, side by side. Tap any score for its full page.

People with an IQ of 135 typically score about 1480 on the SAT and about 31 on the ACT composite. Scores vary a lot from person to person, so the range shows where about four in five land.