1. You must intend to study , it would be very bad if we talk while the teacher who is teaching infront a classroom teach, read cartoon during the lesson.
2. don't disturb others even if we are will bored with the subject, if we don't understand ask the teach, don't ask your friend while study because a friend might not understand because of you
3. obey the warning of a teacher, sometimes when we make a mistake, a teacher may complain or warn but you should not do overconfident or dispute or complain
4. show your sympathy to your friend, sometimes our friend comes to study late or absent, we should explain subject that we can explain to, or if a friend forgets to bring some equipment, if we have we should lend it to them
5. you need responsibility, even we got work in the class but sometimes the teacher would give us homework and what we have to do is finish the homework in time sso we could hand in when the teacher collect.