 Tritschler was the Chair of the Philosophy Department starting in 1911, and at the end of that year was also assigned to teach courses in Dogmatic Theology.He taught at the seminary for nearly 20 years, interrupted only by two trips to Rome he made over that period.In 1916 he received the official appointment of "spiritual father," a position that entailed encouraging seminarians to pursue their vocation and complete their studies until ordination to the priesthood.