What do parents really need to know about bullying? It's not necessarily what you think.

You'll know when your child is being bullied. Just because your child doesn’t tell you he or she is being bullied doesn’t mean it’s not happening. In 2007 almost a third of middle and high schoolers reported that they’d been bullied at school. And those are the ones who admitted it. “It’s one of those silent issues,” Williams says. Many kids don’t speak up because they think that it will lead to more abuse, because they’re ashamed, and because of the powerful unwritten code against snitching.