Different schools have different rules.They can us be good students.Let's me tell you my school rules.
First,we're not be allowed to go to school late.It's can make teachers happy and want to teach us.
Second,we should keep our classroom clean and quiet.It's good for our study and health.
Third,we don't eat in the classrooom,because on the one hand,it makes classroom dirty,on the other hand,it make teachers angry.
Fourth,we need to say "hello" to teacher.Teachers would be happy if we greet to them.
Fifth,we can't play games or listen to music during the class.
What's more,we are not be allow to pick flowers or climb trees.
If we obey these rules ,it can make our school clean and quiet.