There Taché made a strong impression on the staff and on Bishop Ignace Bourget of Montreal. Before he had even completed his theological studies, the bishop appointed him Regent of the College of Chambly, and in January 1844 as professor of mathematics at his old school in Saint-Hyacinthe. Since his meeting the newly arrived community of Missionary Oblates of Mary Immaculate from France in December 1841, Taché had felt drawn to their way of life. When he completed his seminary studies in 1844, he began to consider joining the congregation, feeling a desire to preach to the people of the West, who had been made known to the French colony by the explorations of his own ancestors. Despite the objections of his family (with the exception of his mother), he entered the Oblate novitiate in Longueuil in the fall of that year.