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IQ Score Chart: What Is a Good IQ?

Published: May 21, 2026 Read Time: 5 mins

If you have ever taken a cognitive assessment, you probably wondered: **what is a good iq score**? In psychological diagnostics, intelligence quotient (IQ) scores are relative scores, meaning they compare your performance to a representative sample of the general population.

Let's look at the standard distribution of intelligence scores, standard deviations, and what each range indicates.

The IQ Normal Distribution Curve (Bell Curve)

100 (Mean) 85 (-1 SD) 115 (+1 SD) 130 (+2 SD) 68% of population 14% 2.2% Figure 1: Normal distribution bell curve mapped with standard deviations (SD 15).

Standard IQ Classifications

Typically, scores are divided into the following categories:

130 or Above

Representing the top 2% of the population.

Very Superior / Gifted

120 to 129

Representing the top 10% of the population.

Superior

110 to 119

Above average cognitive performance.

High Average

90 to 109

The average range where 50% of people score.

Average

80 to 89

Below the general median.

Low Average

Qualifying for Mensa Brackets

To join Mensa, you need a score at or above the 98th percentile. On standard tests with a standard deviation of 15, this corresponds to an IQ of 130 or higher.

If you want to practice logic puzzles at this level, try our proctored-style Mensa practice simulator to evaluate your logic under pressure.

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