cellphones

Is it important that teachers are allowed to have cell phones in school? Why or why not?
Yes, teachers should be allowed to bring in their cellphone to school because in case if any student are behaving badly, they are supposed to call their parents. Teachers suppose to bring their cellphone in school because there could be other problems that could happen to their family members. So if they have a cell phone they could reach their family members ask them what's going on. <3