International High IQ Society
Intelligence organization open to those who score in the top five percent of the population. Offers free IQ tests, puzzles, and tournaments.
Triple Nine Society
Home of Triple Nine Society, an intelligence organization where the membership requirement is to have tested at or above 99.9th percentile on at least one standardized adult intelligence test.
Prometheus Society, The
Promotes fellowship among individuals with extremely high intelligence. Founded in 1982 by philosopher Ronald K. Hoeflin. Browse, Gift of Fire, the online journal of The Prometheus Society.
Home of the International Society of the Intellectually Gifted, intelligence organization founded in 1966. Browse Integra, the journal of Intertel and Intertel Hall of Fame of past members.
Poetic Genius Society
Organization composed of intellectually gifted individuals with a passion for poetry.
IQ society founded in 1982 by Dr. Ronald K. Hoeflin. Browse site for qualifications or read Noesis, online newsletter of the Mega Society.
High-Range Intelligence Tests
Join IQ Societies such as Glia, Giga, and Grail or take one of many IQ test including test for genius, bonsai test, and isis test.