General schools include the principal's office (1 principal and several vice-principals), moral education office (a director and a deputy director), guidance office (also called guidance office in some schools), teaching department (a director and a deputy director) and student affairs office (a director and a deputy director, both of whom are at the same level).

Professional schools will have many professional departments (a director, a deputy director and several secretaries).

The email sent by the school to the teacher is generally from the principal's office to the moral education office (guidance office), to the professional departments of all grades and then to the teacher.

The school gives students the principal's office → Political and Educational Affairs Office → Student Union → Students.

Generally, schools have an office as a student union room.

I hope it helps you.