Triple Nine Society

The Triple Nine Society (TNS) is an international high-IQ society for adults whose score on a standardized test demonstrates an IQ at or above the 99.9th percentile of the human population. The society recognizes scores from over 20 intelligence and academic aptitude tests. TNS was founded in 1978. Since 2010, it has been a non-profit 501(c)(7) organization incorporated in Virginia, USA. It is the second-largest high-IQ society after Mensa. , TNS reports a member base of over 1,900 adults in 50 countries.

Organization
TNS is a deliberately non-hierarchical society in which the membership is both the main source of authority and the main driver of activity. It is served by an Executive Committee of nine officers; six are elected for two-year terms, and three are appointed.

In 2015, TNS established a 501(c)(3) subsidiary charitable organization, the Triple Nine Society Foundation, to provide scholarships to intellectually gifted students pursuing higher-education goals and for other charitable work.

Communication
TNS publishes a bimonthly journal, Vidya, which contains articles, poetry, puzzles, and other creative content contributed by members conversant with a variety of subjects, as well as officer reports and other official business of the Society.

TNS members mostly communicate online on the official TNS Discourse forum, official TNS Facebook group, and a variety of unofficial venues ranging from Discord to Telegram and special groups like TNS Youth and TNS LGBTQ+.

Every autumn, the society organizes an annual meeting in the United States called ggg999, with "ggg" referring to "Global General Gathering". A privately organized European gathering, egg, usually takes place in late spring.

Qualifying test scores
To qualify for membership, an applicant must submit a qualifying score earned on any of the standardized tests recognized by the society; these include IQ tests as well as various college admission exams and military classification tests.

For IQ tests, a qualifying score corresponds to an IQ of at least 146 for tests with standard deviation of 15 (e.g., WAIS, Stanford–Binet 5), at least 149 for tests with a standard deviation of 16 (e.g., Stanford–Binet IV and CTMM), or at least 173 for tests with a standard deviation of 24 (e.g., Cattell III-B).

TNS also accepts standardized test scores that have a well-established psychometric correlation with IQ, including SAT, GRE, LSAT, ACT, and the Miller Analogies Test. Required score will differ depending on the year those tests were taken.

Notable members

 * Robert Forster (1941–2019) — actor in Jackie Brown and Breaking Bad
 * Ronald K. Hoeflin (b. February 23, 1944) — American philosopher whose main area of research is human intelligence
 * Mike Keefe (born November 6 1946, in Santa Rosa, California) — American editorial cartoonist best known for his work at The Denver Post, for which he drew cartoons from 1975 to 2011; won the 2011 Pulitzer Prize for Editorial Cartooning
 * Andrew Koenig (programmer) (born June 1952) — former AT&T and Bell Labs researcher and programmer, his name is associated with argument-dependent name lookup, also known as "Koenig lookup"
 * Henry "Hammerin' Hank" Milligan (b.1958) — American retired professional boxer
 * Jack Schaeffer (born March 19, 1946, Los Angeles, California) —American musician, recording artist, record producer and arranger
 * Andrew York (b.1958) — American classical guitarist and composer