keeo them out of school

In my openion,befor we lived a hundred years without cellphoon and we can live another hunred without them if we want .They are adisroption to class instruction,for example if one of the student waiting for a call they can not thing about other thing ,they just thinking about reciving that call.Ithink student need to learn when a cellphone can be appropriate.When students use cellphone in classroom it can end the learning process .Technology is a wonderful and useful tool when used properly