Couldn't tell ya, grew up in the fifties. Walked home after the kindergarden teacher slapped me across the face more than once, used to be about talking in class mostly. Third grade teacher used to press down on the top of my skull with her eagle claws with her fingers clenched together. Fifth grade teacher would just bounce one of those chalkboard erasors off the side of my head, same went ballistic on me when I grabbed a football away from a kid I knew who was about to throw, punching me in the arms and kicking me in the shins. ( true ,, not exagerrating ) Seventh grade teacher just bashed me on the back of the head with a history book /thunk. It was what it was.