99.87 th percentile; IQ 145 sd15, IQ 148 sd16
≥ 3 standard deviations above the mean
49th WIN member society (since 07/2015)
Three Sigma Korea(TSK) was founded on January, 2008 by Hankyung Lee, M.D, with the aim to gather the people who have high level of intelligence above IQ 172 sd24 or IQ 145 sd15 of the unselected adult population in Korea. TSK provides an intellectual private forums that TSK members are allowed to share ideas and opinions for intellectual life.