Standard IQ Society
This High IQ Society List is from 2 sigma to 5 sigma, in which “sigma” applies to “S.D.” or standard deviation. For example, Mensa = 2 sigma (1:50 or 1-out-of-50 in the general population), when S.D. equals 15, 16, or 24 , means 3 times 15, 16, or 24, plus 100, or 130, 132, and 148, respectively. Please make sure this list is for the USIA admission through other memberships.
2 Sigma (1:50 or 1-out-of-50), top 2%
IQ 132, SD16, Mensa
IQ 137, SD16, Intertel
IQ 137, SD16, Top One Percent Society
3 Sigma (1:750 or 1-out-of-750), top 0.1%
IQ 148, SD16, TSA Society of USIA
IQ 149, SD16, Triple Nine Society
IQ 149, SD16, One in a Thousand Society
4 Sigma (1:30,000 or 1-out-of-30,000), top 0.003%
IQ 164, SD16, FSA Society of USIA
IQ 164, SD16, Prometheus Society
IQ 164, SD16, Epimetheus Society
IQ 168, SD16, Ultranet of Mega Foundation
IQ 176, SD16, Mega Society
IQ 176, SD16, Omega Society
5 Sigma (1:3,500,000 or 1-out-of-3,500,000), top 0.00003%
IQ 180, SD 16, ESA Society of USIA
IQ 180, SD 16, Olympiq Society
IQ 180, SD 16, Mega International (Society)
