Corporal punishment

One elementary school teacher imposed corporal punishment on one student. In lunch time, the student had to prepare but he played with friends. Teacher told student to do his work of preparation but the student disregarded his advice. So, the teacher got angry and strongly barged the head of the student against a desk. The student suffered from a brain concussion. It is easy for teachers to let students obey them by corporal punishment. However, teachers have to let their students accept their advice by talking.