text: If the idea of letting students use cell phones during free times and lunch periods does prove to be a fail, then the school could always just go back to no cell phones on at school rule. There is no harm at just giving this idea a chance. The idea might just be very successful. Just because there is a change made to the way things are, that does not mean they must stay that way forever. All they have to do is change the rules back to the way they were.