How do you feel about having personal self defense classes in elementary schools?

It doesn't hurt....self-confidence can stop some of the bullies in their own tracks which the young boy I'm raising did yesterday on the school bus on his way home. One of the boys asked his best friend how old he was and he said "12" and the kid punched him 12 times. He looks at my boy and asked him how old he was....he said "9" and then put his foot up in a defensive mode and said "I dare you!"...the kid turned around and went and sat down.