K-12, Athletics, Summer Programs, Continued Education Classes. The mission of The Winston School San Antonio is to provide a personalized, college preparatory education for students with high potential and identified learning differences.  The Winston School San Antonio is a non-profit, tax-exempt institution under Section 501(c)(3) of the Internal Revenue Code. It admits students of any race, sex, color, national or ethnic origin to all rights, privileges, programs and activities generally accorded of made available to students at the school. It does not discriminate on the basis of race, color, gender, national or ethnic origin in the administration of its educational policies, admissions policies, scholarship and loan programs, and the athletic and other school-administered programs.