principal; head teacher
Refers to the head of a school (elementary through high school). Not used for university presidents (学長) or company heads.
校長先生が朝礼で話をした。
The principal spoke at the morning assembly.
彼女はこの学校の校長です。
She is the principal of this school.
Mr. Tanaka will become principal starting next year.
She served as principal of this school for ten years.
I caused trouble and was called in by the principal.
principal's office
school principal; headmaster; headmistress