International Quadball Association | 1,000 followers on LinkedIn. The International Quadball Association (IQA) is a 501(c)3 nonprofit dedicated to governing the sport of quadball and inspiring young people to lead physically active and socially engaged lives. Quadball was adapted in 2005 at Middlebury College in Vermont and is now played at over 300 universities and high schools all over the world. The IQA was founded in 2010, and annually hosts or sanctions around 25 events, including nine regional championships, the World Cup, International Open, European Games, and QuidCon.