The Winston School San Antonio Mission Statement News & Events Directory Employment Opportunities Profile Admissions Information Map to 8565 Ewing Halsell, San Antonio, TX 78229-3718 Phone: 210.615.6544 Fax: 210.615.6627 WSSA is located in the South Texas Medical Center, near I-10 and Wurzbach Road. Our site has new information posted regularly. Please check back soon! ...