The head teacher, headmaster,headmistress, head, or principal (sometimes another title is used) is the teacher with the greatest responsibility for the management of a College.
In the past, the headmaster or headmistress of a British private school was often the owner of the school or a member of the owning family, and the position often remained in the family for many generations.
In Scotland, the holder of this position is sometimes known as the "rector", most commonly in independent schools. In North America, Australia, New Zealand, Hong Kong and Ireland (including Northern Ireland), the position holder is usually known as the "school principal", but some schools, primarily independent schools, use the term "headmaster" or "head master". As in Scotland, the term "rector" is still in use in the United States in independent religious schools, as by tradition the Head of School was also a priest. Some American state schools, such as Boston Latin School, Brooklyn Latin School, and Milpitas High School, also use the term "headmaster", either because of its history or historical connections.
In Britain, the terms "headmaster" and "headmistress" used to be the formal titles in most state schools as well as private schools, with "head teacher" only being used as a term to refer to them collectively. In recent years, however, most state schools have switched to the gender-neutral "head teacher" as the official title. Nevertheless, the gender-specific terms are still in common use, and are still the official titles at some of the remaining state grammar schools and most private schools. Some use other terms, such as "high master".
"Principal" or "Head of School" is often used as the title of the head administrator of an elementary school, middle school, or high school or boarding school in some English-speaking countries, including the United States, India, Australia and New Zealand. Public schools in the United States generally use the title "principal" whereas private schools in the United States sometimes use the title Head of School.