Delbarton School is a private all-male Catholic college-preparatory school in Morristown, New Jersey for young men in seventh through twelfth grades. It is an independent school directed by the Benedictine monks of St. Mary's Abbey and is located geographically within the Diocese of Paterson. Delbarton is a member of the New Jersey Association of Independent Schools and has been accredited by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools since 1961.