Sure. Teachers would love to ban cellphones and punish kids who disobey. The problem is, the parents who sit on the school boards as trustees won't let them.
Adding parents to the school system has single-handedly destroyed the North American education system. Why is there no homework? Because parents complain that kids find it too hard or too much. Why is there no discipline? Because parents complain that discipline is making their kids miserable. Why is there so much emphasis on schools to teach practical skills? Because parents have abdicated their responsibility to teach these skills at home, where they belong.
Parents are no experts on education yet they get to decide what teachers do in the classrooms. The law of averages dictates that 50% were below average students themselves. Guess who sits on the school boards? It's not the over-achievers, those people are too busy being successful in their careers.
There's a global competition for talent and our children are falling behind. Now you know why.