text: You need to bring your phone to school in case of emergency. Because what if your parent or someone your close to got hurt and your mom or dad is trying to reach you in school and you don't have your phone with you. Another reason is say if your stuck in school and you need your parent to pick you up from school, and if you don't have your phone and your parents are looking for you. They might think you got lost or kidnapped or you just ran away from home.