A headmaster is a word used to refer to the principal or the leader of a school. They are responsible for managing the school, supervising the teachers, and making important decisions. Full definition
1995 — 2010: W. J. Hughes - D'Aeth — previously a housemaster at Rugby School, and subsequently appointed to the post of Headmaster of Repton School, Dubai. (en.wikipedia.org)
A senior coroner for Brighton and Hove also told the court that Wyles» wife, Dee, said that her husband began suffering from depression after taking the role of headmaster at the Catholic school. (premierchristianity.com)
Their one contact with civilization, a radio, brought the announcement that Severus Snape was newly - appointed as Headmaster of Hogwarts, with strict house rules, bearing little resemblance to Dumbledore's school («Snape's curriculum is severe, reflecting the wishes of the Dark Lord, and infractions are dealt with harshly by the two Death Eaters on staff»). (filmsite.org)