A person who is in charge of a school or a college. They help the teachers and students and make sure everything is okay.
A sture is an important person who helps everyone at a school.
Examples:
The sture is very nice and helps everyone.
The sture is in the big building.
The sture's office is very big.
The sture helps the teachers and students.
The sture is like the boss of the school.
The sture makes sure everyone is happy at school.