The rules of notre dame's school

We aren't allowed to run on the playground.
But we are allowed to run during the PE lessons.

We aren't allowed to take food or drink into a classroom.
But we are allowed to eat or drink outside.

We aren't allowed to use mobile phones.
But we are allowed to take it.

We aren't allowed to chewing gum.
But we are allowed to sweet.

We aren't allowed to listen to music.
But we are allowed to speak with our friends during the break.