ISI Society (ISI-S) on Revised 99.9th Percentile List

We've added a new High-IQ Society to our list of those for which documented membership is considered qualifying for membership in the IQuadrivium Society. Our How to Qualify page has been modified to reflect this. ISI-S now joins the International Society for Philosophical Inquiry (ISPE), the Triple Nine Society (TNS), and the One in a Thousand Society (OATHS) in this distinction.