A head teacher (also called a school principal , or headmaster / headmistress ) is the teacher in charge of a school . He or she is the school's leader and administrator .

In the past, the headmaster or headmistress of a British private school was often the owner of the school or a member of the family who owned it, and the position often remained in the family for many generations.

This short article can be made longer. You can help Wikipedia by adding to it .