The original school was founded by 5 Sisters of Mercy in Shawnee, what was known at the time as Indian Territory. They relocated the school of Oklahoma City in 1903 as the original school had been destroyed in a fire two years earlier. It started as a school for girls, boarding at first, followed by day students.
In 1950 as a result of the reorganization of Catholic schools throughout the Oklahoma City archdiocese it was agreed that boys would be admitted as well as girls.[4]