The Saint Mary’s Hall community is heartbroken to share the passing of Brian Kaestner, a cherished educator, coach, colleague, and the unforgettable leader of the school’s commencement processional. He passed away on April 8, 2025, leaving behind an extraordinary legacy built over 44 years of unwavering dedication and service.
Coach Kaestner was more than a teacher—he was a mentor, a motivator, and a constant source of inspiration for generations of students. With a deep commitment to excellence, he shaped not just minds but hearts, instilling values of perseverance, sportsmanship, and integrity in all who knew him. His booming voice, infectious enthusiasm, and genuine care lit up every classroom, field, and ceremony he touched.
Beyond the walls of Saint Mary’s Hall, Coach Kaestner made a profound impact on the greater San Antonio community. His influence stretched far and wide, as former students and athletes carried his lessons with them into every walk of life.
There are few who could match the passion, humor, and heart that Brian brought to his work every single day. Whether on the sidelines of a game, in the middle of a history lecture, or proudly leading the commencement march, he did it all with love and purpose.
He made a difference—in thousands of lives. And his legacy will echo through the halls of Saint Mary’s Hall and the hearts of all who knew him for years to come.
