Ballet Master (also Balletmaster, Ballet Mistress, Premier Maître de ballet or Premier Maître de ballet en Chef) is the term used for an employee of a ballet company who is responsible for the level of competence of the dancers in their company. In modern times, ballet masters (or ballet mistress for a female) are generally charged with teaching the daily company ballet class and rehearsing the dancers for both new and established ballets in the company's repertoire. The artistic director of a ballet company may also be called its ballet master.