It's been my observation that some teachers today, deprived of the ability of using corporal punishment, use something which is much worse, in my opinion. They use humiliation tactics and psychological abuse. I remember one (male) teacher telling me that a professor in his college told them that, if all else fails, humiliate them. In my opinion and experience, humiliation tactics only create resentment and anger in the person to whom it's directed, especially if it's an adult humiliating a child who does not have the experience to respond or shrug it off. This can do a lot more damage than a wack with the old tawse.