What does boarding mean?

Dormitory administrator, referred to as "boarder" or "boarder", is a person who manages students and student dormitories full-time. Job responsibilities editor strictly urges boarders to implement the school's management system for boarders; Open and close the dormitory door on time, strictly abide by the duty post and be on duty seriously; Supervise boarders to clean their houses, dormitories, stairs and other chores.