Plagiarism Punishment

In my opinion,I agree with the punishment in those cases.When teacher wants student to hand in an assignment,teacher is want to understand how much student have learned from the lessons and what teacher have teach.So,it is irresponsible for student who doesn't do their assignment and it is dishonest for student who copy other's assignment.It is also illegal for student who plagiarize the assignments.If students don't do the assignment by themselves,then teacher can't know how much they understand the lesson and how much they have learn.Due to the Internet is growing,many and many students stuff the Internet to "finish" their assignments. Through the Internet, people can see other people's essay easily and also can copy them easily.
Therefore,it is unfair for student who do their assignment earnestly and students who copy the assignment is can't learn something during they do their assignment.So,student who copy other's assignment should be punish.