Welcome to Antonian College Preparatory High School — a coeducational Catholic high school in San Antonio, Texas, where students are inspired and empowered to lead meaningful lives rooted in the teachings of Jesus Christ. Founded in 1964, Antonian is proud to be the largest Catholic high school in the Archdiocese of San Antonio. Our college-preparatory environment challenges students to grow academically, intellectually, spiritually, and socially — equipping them for success in college, career, and life. Here, students enter to learn and go forth to serve.