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Is a 155 IQ Good? What the Score Means

A 155 IQ is far above the average of 100. Only about 1 in 8,100 people score this high or higher. Clinical reports would call 155 Extremely High in WISC-V wording and Very Superior in the traditional WAIS-IV wording.

Percentile
99.99
How rare
1 in 8,100 score 155 or higher
WISC-V wording
Extremely High
Traditional wording (WAIS-IV)
Very Superior
Distance from 100
3.67 SD above
On an SD 16 test
about 159
On an SD 24 test
about 188
Our test's usual range here
our test cannot show this score
Where 155 sits on the IQ curveA bell curve with a marker at 155. The shaded area to the left is the share of people who score lower; 155 is at the 99.99th percentile.70100130155

What does a 155 IQ mean?

A score of 155 is 3.67 standard deviations above the average of 100. On most IQ tests one standard deviation, the typical distance from the average, is 15 points, so 155 is 55 points away.

155 is 25 points above the start of the top band, which begins at 130 and has no upper end. About 2.5 in 100 people score anywhere in the top band that holds 155.

What percentile is an IQ of 155?

A score of 155 is at the 99.99th percentile. That percentile is the share of people who score lower than 155, not the share of questions right. Five points higher, 160 is above the 99.99th percentile. Five points lower, 150 is at the 99.96th percentile. Across those ten points around 155, the percentile moves by 0.04.

How rare is an IQ of 155?

About 1 in 8,100 people score 155 or higher. In a town of 100,000 people, about 12 would score 155 or higher.

For each person who scores exactly 155, about 831 people score exactly 100. These figures for 155 come from the normal curve that IQ scales are built on, and the IQ calculator works out any other score.

What would 155 be on other tests?

Not every test would print 155 for this position. Older Stanford-Binet forms and many school tests use a standard deviation of 16; there, the same position as 155 is about 159. On a scale with a standard deviation of 24, used by the Cattell test, it is about 188. 155, 159 and 188 all mean the same percentile.

Is 155 a good IQ score?

The scale does not grade the person behind a 155; it places one result among other people’s results. As a position, 155 is far above the average of 100. What a 155 is useful for depends on the purpose, and a single online result is too rough for decisions about school, work or support. A 155 describes some kinds of reasoning on one test, on one day, and leaves out a great deal that matters, such as effort, knowledge and character.

Is 155 enough for Mensa?

Only if the 155 comes from a supervised test that Mensa accepts. American Mensa accepts scores at or above the 98th percentile, and 155 is at the 99.99th percentile. On the Wechsler scales the line is a full-scale IQ of 130, so 155 is 25 points above it. A 155 from an unsupervised internet test, ours included, is not accepted. Our Mensa IQ test guide explains the supervised routes to showing a 155.

Is 155 a genius IQ?

No test or psychology dictionary calls 155 a genius score, or defines one at all. The often quoted 140 goes back to a long-term study that selected children scoring above 140; by that line, 155 is 15 points over it. What a person with a 155 achieves depends on far more than a test number, as what IQ is considered genius explains.

Can any test measure a score of 155?

Every test has a ceiling, a highest score it can give, and few tests are built to measure as high as 155. The WISC-V full-scale score, for example, runs from 40 to 160, so 155 sits near its top. On our own test the range gets wider on the way toward 155: about 24 points wide at 100 and about 28 points wide at 140. Our page on the highest IQ score explains why scores like 155 are hard to pin down.

What does an online result of 155 mean?

Our test cannot show a 155. A perfect score currently shows about 140, and a test of 30 questions runs out of hard questions long before 155. Results above 145 show as “145 or higher”. Our methodology shows how the range is made.

An unsupervised online 155 may also run a little high: a large review found a gap of about 3 IQ points. Taking the same kind of test again usually raises a score like 155 a little, mostly on the first retakes. Our guide are IQ tests accurate covers this in depth.

To see where your own result falls next to 155, take the free IQ test. It has 30 questions and shows an estimated range with every result.

Scores near 155

  • 153 IQ: 2 points lower, at the 99.98th percentile.
  • 154 IQ: 1 point lower, at the 99.98th percentile.
  • 156 IQ: 1 point higher, above the 99.99th percentile.
  • 157 IQ: 2 points higher, above the 99.99th percentile.

Look up any score from 70 to 160, not only those near 155, in the score explorer.

FAQ

What percentile is 155 IQ?

A score of 155 is at the 99.99th percentile. That means about 99.99 percent of people score lower.

Is 155 IQ genius?

No test defines genius, so no test calls 155 genius. 155 is in the top band of the scale. Only about 1 in 8,100 people score this high or higher.

How many people have an IQ of 155?

On a whole-number scale, about 0.003 percent of people score exactly 155. About 1 in 8,100 people score 155 or higher.

Can an online test show 155?

Not reliably for 155. Our test shows anything above 145 as “145 or higher”, and a perfect score currently shows about 140.