Mobile phones should be allowed at school?

Kids should be able to bring cell phones to school as long as these phones are used in a way that does not disrupt classes. You should not be on the phone while your teacher is delivering a lesson. Even the sound of a ringing phone is disruptive. (Ringing, or whatever other sound it makes to signal an incoming call.) But if you can use your phone when you are not in class, that is perfectly reasonable.