We have physical bullying which is things such as hitting, shoving, pushing, and tripping.
We also have verbal bullying which involves the use of words such as teasing, name-calling and hurtful comments.
Finally we have social bullying which cyber bullying happens here as well. But social is using relationships to hurt one individual.
Possible solutions for these would be things such as having a teacher in place for physical bullying or a program to circumvent it. For social lock certain things they can access (cyber bullying reference). For verbal the only thing you can do is set rules on the language used.