I believe that the phone is in school and can bring harm and benefit. Someone, for example, there is a calculator, and the lessons of chemistry and physics without it sometimes is not enough. Sometimes the student needs to urgently contact the parents. Schedule easier not to remember or write standing up, and take a picture. But if the student begins to listen to music in class, do not turn off the sound, and he begin to call, write SMS, it is a clear violation of discipline and disrespect elementary teacher.

I think that the phone in school can bring harm and benefit. Someone, for example, haven't got a calculator and at the chemistry and physics without it sometimes is not enough. Sometimes the student needs to urgently contact the parents. Timetable easier to remember or write standing up, and take a picture. But if the student begins to listen to music in class, do not turn off the sound, and he begin to call, write SMS, it is a clear violation of discipline and disrespect elementary teachers