Not every school’s anti-bullying program works – some may actually make bullying worse
https://theconversation.com/not-every-schools-anti-bullying-program-works-some-may-actually-make-bullying-worse-116163
Examining the Effectiveness of School-Bullying Intervention Programs Globally: a Meta-analysis Hannah Gaffney1 & David P. Farrington1 & Maria M. Tt
https://www.psychologytoday.com/us/blog/media-spotlight/201601/what-makes-anti-bullying-programs-effective
Successful anti-bullying program identified by UCLA https://www.universityofcalifornia.edu/news/successful-anti-bullying-program-identified-ucla