My views regarding punishment in schools

I am strongly against punishing students by making them stand outside classrooms or anywhere else in the school. It is better to send them to the library to copy some literary text, at least they will be learning something. What if many students want to be sent to the library to copy text than to sit in the classroom and listen to the teacher. Well if students want the path of self learning, even better still. For students who are very active and dont like to have to sit like 5 hours in the classroom, let them have some physical exercise first before going to the classroom.