Founded in 1961 by Rev. Fr. Walter Maxcy, M.M., Maryknoll High School of Santo Tomas, a private, non-sectarian diocesan school owned by the Roman Catholic Church of the Diocese of Tagum, is under the management of the Dominican Sisters of the Most Holy Rosary of the Philippines under the supervision of Mr. Ma. Teofila F. Frondozo, O.P.
It was founded in 1961 by Rev. Fr. Walter Maxcy, M.M., a Maryknoll Missionary. Maryknoll School of Sto. Tomas Inc. (or more known as MSSTI) is a private, non-sectarian diocesan school owned by the Roman Catholic Church of the Diocese of Tagum. Its under the management of the Dominican Sisters of the Most Holy Rosary of the Philippines under the supervision of Mr. Ma. Teofila F. Frondozo, O.P. 
