I was bullied in grade school at both public AND private schools.  My late father who happened to be a police officer, actually went to the PRIVATE school and had a "talk" with the principal.  It sure helped, but it progressed from boys to girls.  I also had to defend my one twin daughter of being bullied SEXUALLY and filed a sexual harassment suit.  The "principal" was a total "weenie", and stood behind the instigator instead.  All in all, we both survived, but it needs to STOP in ALL schools of all ages and even at the work place!!