Cyberbullying is already an offence as long as it fits within the definition of harassment. So no need of any new offence. And like all crimes, it can give rise to disciplinary sanctions. And like all disciplinary sanctions, a lot of interpretation is given to the disciplinary institutions. Nothing new, everything under scrutiny by judicial review. It is especially with the ECHR artilce 6.
"Student Sues School For Suspending Her Over Facebook Group" (10 December 2008) I wonder to which extent the article confuses legal issues and factual issues (whether there was bullying or not)