Our pupils mustn't run and cry.
All pupils must wear an uniform.
All pupils must do homework and be attentive at the lessons.
All pupils mustn't be late.
All pupils mustn't use telephone at the lessons.
All pupils mustn't leave school without the permission of a teacher.
All pupils mustn't smoke.
All pupils must be polite to each other.
All pupils mustn't use bad words in their speech.