It is a non-profit organization open to people who score at the 98th percentile or higher on a standardized , supervised IQ or other approved intelligence test .
Mensa is the largest and oldest high IQ society in the world .
Mensa is a non-profit organization open to people who score at the 98th percentile or higher on a standardized , supervised IQ or other approved intelligence test .
Mensa is the largest and oldest high IQ society in the world .