And corporal punishments also make it clear on what is right and what is wrong and this will greatly help students as they get older.
Children don't get depressed after one small hit to the hand and most of the time the wouldn't want to get hit again and the would start to behave and the cases that you show are form abusive teacher's as most of the time it should be a small punishment and not something the inflicts enough pain to form a bruise.
Argument 2-Affordable Method of Discipline
This is a very affordable way to punish a child as you wouldn’t need to visit therapists and doctors to take pills and other medicine for a misbehaving child. as a quick punishment to your child could solve many problems and save time and money.