It is impolite to talk or make noise when their classmates are sharing ideas.

Teachers are not happy when students do not pay attention because of these devices.

Thirdly, students have to keep the class clean.

They are not allowed to be late.

A clean classroom is a comfortable place to study.

Finally, students have to listen when others are speaking.

Secondly, they are not allowed to use cell phones during lessons.

Firstly, students have to be on time.

There are several rules in my class.