Bullying

A bit off topic, but this book http://www.nytimes.com/2013/03/03/books/review/sticks-and-stones-emily-bazelons-book-on-bullying.html?ref=books&pagewanted=all (and subject) are very in the news. I would be interested in hearing from those in the group with teaching experience about how prevelant the problem is here, what are signs to look out for, and what can we do to help.