Description. SUMMARY. The substitute teacher fills in for an absentee teacher on a non-continuous or ad hoc basis for 10 days or less. The Substitute Teacher’s primary duty is teaching, tutoring, instructing, or lecturing to impart knowledge on students. The Diocese of Orlando four core values lay the foundation for the work performed by employees. Authenticity: Conviction that God has called us to reflect exteriorly our inner life of faith in ou...