pi sigma is an intelligence society for those whose Wechsler General Ability Index (GAI) is above pi standard deviations from the norm (i.e. 148 and above). Unlike lower IQ societies (e.g. https://www.mensa.org/, https://www.intertel-iq.org/ and https://www.triplenine.org/), pi sigma accepts only one test score. The WAIS must have been administered by a United States board-certified psychologist and the score must have been achieved on the prospective member’s first testing attempt. Prospective members are encouraged to make contact by a method of their choosing. In the case that a prospective member does not achieve a qualifying score, they are encouraged to apply to another society, such as those aforementioned.