The second Archbishop of San Francisco, Archbishop Patrick William Riordan established St Patrick's Seminary in Menlo Park in 1898, in cooperation with the Society of Saint Sulpice—a French-based order of priests dedicated to educating future priests. To thank the generous Irish laypersons and clergy who helped to fund and support the Seminary, Riordan named it in honor of Saint Patrick of Armagh, the Apostle of Ireland. By this time, the Sulpician order had committed five priests, three Frenchmen and two Americans to staff the seminary. The first rector was Rev. Father Jean-Baptiste Vuibert, S.S. On August 24, 1898, the seminary was solemnly dedicated by Riordan, joined by Bishops George Montgomery of Los Angeles and Thomas Grace of Sacramento, along with more than 100 clergy. On September 20, 1898 the seminary received 31 high school students and 3 college-level students. The first annual commencement exercises took place on May 31, 1899 and were presided over by Riordan. As the seminary continued to develop, a Department of Philosophy was established with six students. In 1903, the Little Sisters of the Holy Family arrived from Sherbrooke, Quebec, Canada, to take care of the domestic services such as cooking, laundry and cleaning. They have since returned to Canada due to a lack of religious vocations, but currently working in their stead are the Oblates of Jesus the Priest. The Society of Saint Sulpice withdrew completely from St. Patrick's Seminary & University on June 30, 2017.
Clerical formation
Students are admitted to Saint Patrick Seminary on the recommendation of their diocesan bishop after intensive psychological testing and rigorous interviews. The program consists of four years of spiritual, academic and pastoral formation in residence. Following the second year of studies, a candidate undergoes a year of intensively supervised pastoral experience. Normally, a candidate is called to the diaconate by his bishop in the fall semester of his last year, to serve in a local parish for the remainder of that year before being called to the presbyterate. All candidates undergo formation which includes daily participation in the Liturgy of the Hours and the Eucharist, as well as spiritual exercises and special devotions. For continued studies at Saint Patrick's, all candidates must conform to the standards of moral and academic fitness required by the seminary in accordance with its directives and prescriptions for its program of priestly formation. Candidates deemed unsuitable for seminary life or for the priesthood are either put on probation or dismissed outright from the seminary community.