Although Sporting Clays is relatively new in the United States, it ties back to the early 1900s in England. Unlike the standardization of trap and skeet, sporting clays was designed to simulate hunting. The National Sporting Clays Association was formed in 1989 and is recognized as the governing body for the sport.
Sporting Clays is shot in squads of two to six people and is staged on a course of anywhere from 10 to 15 stations. No two courses are the same. Super Sporting is essentially the same as Sporting Clays, but instead it has three or more machines on each station.
You can learn more about Sporting Clays and NSCA here.