The South Texas Paint Horse Club was founded in order to promote the American Paint Horse in the south Texas area.  The STPHC offers year-end awards to members that participate in APHA shows approved by STPHC and the opportunity to earn National points thru the American Paint Horse Association (APHA) at the club sponsored shows.

STPHC also sponsors one of the largest shows in the nation, called the Margarita Classic, which takes place each year in October.