ESD varsity student-athletes compete in the Southwest Preparatory Conference (SPC) which consists of 18 of the finest college preparatory schools located in Texas and Oklahoma. These schools are accredited by the Independent Schools Association of the Southwest (ISAS). The ISAS established the SPC "for its students' enjoyment, physical fitness, and instruction in skills and character, for the intrinsic worth of individual sports and team games which are ably taught, faithfully played, and fairly matched; and for the mutual benefits derived from keen competition and true sportsmanship within a sensible educational framework." The SPC is often referred to as the Ivy League of college preparatory schools.
More information can be found at http://www.spcsports.org/.