The rules in the school NOTRE-DAMES.

We aren't allowed to speak in the classroom but we are allowed to speak in the break.
We are not allowed to fight in school but we are allowed to visit the headmaster.
We are not allowed to stand up during the lessons but we are allowed to stand up in the break.
We are not allowed to open the windows but we can let make professor.
We are not allowed to walk in the lessons but we can walk to school.