The Olweus Bullying Prevention Program (OBPP)
effectively reduces all five forms of bullying: verbal, physical, indirect/relational, sexual, and cyber/electronic bullying.
This is demonstrated in a large-scale study that involved more than 30,000 students in grades 3-11 over the course of three years. The International Journal of Bullying Prevention recently referenced the study in an evaluation of OBPP
. See the full article.