In the 18th century they attracted the sons of the nobility, as well as candidates from the common class, and produced a large number of the French hierarchy. The Séminaire de Saint-Sulpice was closed during the French Revolution, and its teachers and students scattered to avoid persecution. That Revolution also led to the secularization of the University of Paris. When France stabilized, theology courses were offered exclusively in seminaries, and the Sulpicians resumed their educational mission. Sulpician seminaries earned and maintained reputations for solid academic teaching and high moral tone. The Society spread from France to Canada, the United States and to several other foreign countries, including eventually to Vietnam and French Africa, where French Sulpician seminaries are found even today.