The Greater San Antonio Chapter of TASO is a local organization that handles officiating responsibilities in the Greater San Antonio and South Texas area for UIL and TAPPS schools. GSAC remains one of the most active chapters in the state.
The Greater San Antonio Chapter, consisting of about 375 officials, services a large geographic area in the Greater San Antonio and South Texas region, ranging from Laredo in the south, to Del Rio in the west, to San Marcos in the north, and Pleasanton in the east.