An IQ score of 120 or higher only puts you in the top 10% of the population not the top 2%.
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IQ Description % of Population
130+ Very superior 2.2%
120-129 Superior 6.7%
110-119 High average 16.1%
90-109 Average 50%
80-89 Low average 16.1%
70-79 Borderline 6.7%
Below 70 Extremely low 2.2%
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A MENSA candidate should have mastered spelling and sentence structure by the eighth grade. I believe what we have is not a group of people who have superior intelligence. We have a group of people composed of those with superior intelligence and those who believe they have superior intelligence.