The term "head-master" refers to the leader or principal of a school. Synonyms for this word include head teacher, principal, director, head of school, headmistress, headmaster, and superintendent. A head teacher is responsible for the overall administration of the school, ensuring that students receive quality education and that teachers adhere to set rules and regulations. A principal is responsible for administration, discipline, and curriculum in a school, while a director is the leader of a department or program. A headmistress or headmaster is a female or male principal, respectively. Finally, the superintendent is in charge of the entire school district and is responsible for all schools within it.