FWIW--an article in Psychology Today from 2009:
http://www.psychologytoday.com/blog...0901/new-evidence-against-anti-bully-policies
One of the links is dead, but this may be the paper:
http://www.apa.org/pubs/info/reports/zero-tolerance.pdf
New Evidence Against Anti-Bully Policies
Published on January 6, 2009
(...)
Previous scientific studies have shown the ineffectiveness of anti-bully programs, and this current APA report should serve as another nail in the coffin of the anti-bully movement. I say should, but I don't expect it will because people love the idea of hunting down and eradicating bullies and don't want to see anything that challenges their beloved witch-hunt. When it comes to bullying, there seems to be a split in people's minds, and they don't realize that the research on aggression also applies to bullying.
http://www.psychologytoday.com/blog...0901/new-evidence-against-anti-bully-policies
One of the links is dead, but this may be the paper:
Are Zero Tolerance Policies Effective in the Schools?
An Evidentiary Review and Recommendations
http://www.apa.org/pubs/info/reports/zero-tolerance.pdf