My DD was bullied in pre-school and she did not protect herself. We enrolled as a family in Martial arts and the bullying stopped almost immediately. She learned a few blocks and I think she just carried herself more confidently. She has been a bit like hermoine in class specially in the bad fit school. I think sometimes it is a way to deal with the bordeom. So she was attempted to be picked on and she just took on her martial arts atitude and they left her alone. She's never actually had to use it but we started young and I think she carried it into school with her. It worked for us and the whole family got exercise as most of the schools put ability together rather than age...unlike school!