Mensa International facts for kids
Mensa International (or just Mensa) is the largest, oldest and most famous high-IQ group of people in the world. The non-profit organization only has members with high IQs. They must score at the 98th percentile or higher on a standardized, supervised intelligence test. In many cases the IQ you have to have to join is 130.
Mensa International Facts for Kids. Kiddle Encyclopedia.