The Anti-Bullying procedures set out the requirements on schools in relation to preventing and dealing with bullying behaviour. There are also a number of bodies/groups that provide information and assistance on the topic of bullying including the Anti-Bullying Centre at Dublin City University and the National Parents Council.
New Action Plan on Bullying: https://www.gov.ie/en/publication/52aaf-cinealtas-action-plan-on-bullying/#bi-cinealta-procedures-to-prevent-and-address-bullying-behaviour-for-primary-and-post-primary-schools