Trinity High School is a Catholic, all boys, college preparatory high school located in St. Matthews, Kentucky, a city within Louisville Metro (consolidated city/county government). Trinity first opened its doors in 1953, when Archbishop John Floersh anticipated the growth of Louisville's eastern suburbs by choosing the site of Holy Trinity School, a former Catholic church and grade school in St. Matthews. It is located in the Roman Catholic Archdiocese of Louisville. The school incorporates the Catholic tradition of teaching and learning. The school campus comprises about 1,400 students.