St. Thomas is conducted by the priests of the Congregation of St. Basil. They are an international community of religious priests who live a communal life and bind themselves to God by vows of poverty, chastity and obedience. They dedicate themselves to the service of the Church in any priestly ministry but have centered their apostolic work on the education of youth since 1822.
For its first forty years, St. Thomas High School’s name was St. Thomas College. Later, when the school moved to the current campus and with the Basilian Fathers parenting the University of St. Thomas a few miles away, they officially changed the name of the school to “St. Thomas High School.”
Today, St. Thomas is the oldest college preparatory high school for young men in the State of Texas.