As a former victim of bullying, it's most often a problem on the end of the aggressor. I was bullied cause unlike other girls in my elementary school, I'd rather play video games or read a book all day. I was once beat up by a 4th grader while I was in the second grade cause I bumped into him. Let me just tell you I didn't stay a victim for long...I learned to whoop some major ass by the time I was 11. But the bullying caused me to become a shut-in at some point...I didn't have a real friend until Junior High and every time I went outside, I checked to make sure no one was following me. It took almost 5 years, but I've stopped looking over my shoulder every five seconds, I don't flip when someone touches me, I can keep my anger at a healthy level and not rip someone's head off, and I'm not afraid to go to school anymore.
But yeah, the 10% is bull, it's much higher, but not all victims come forward and seek out about it and it's a real problem. In my old town, teachers just sat to one side and let it happen. Hell, sometime teachers joined in on it!
So maybe it's time to stop looking at the victim and look closer at the aggressor, cause 99% of the time, that's where you problem lies.