Ответ:
1. You mustn't use your mobile phone during lessons.
2. You must listen to your teachers carefully.
3. You must wear your school uniform.
4. You mustn't run at school breaks.
5. You mustn't bully with other students at your school.
6. You must be kind and polite with everyone.
7. You need to do all your homework.
8. You mustn't shout at your classmates.
9. You mustn't break any school property. For example: plants
10. You must write down your notes.
11. You must go to the library and read books.
12. You must revise to all your exams.
13. You mustn't miss your lessons.
14. You mustn't be late to your lessons.
Good luck!