The dormitories are the residences to eighty-five Upper School students Sunday evening through Friday afternoon. The Jane Bay Hall II welcomed its first residents in 1969 and currently houses thirty-five female boarders. The first Jane Bay Hall was constructed in 1917 with funds bequeathed by Jane Bay, who, upon her death, wanted to finance a home for boys. Jane Bay also houses McDonogh's archives and the infirmary. The Lillian Rollins Hall, first occupied in 1967, houses fifty male boarders. It is dedicated to Lillian Rollins, mother of H. Beale Rollins, Class of 1915.