Bullying is experienced at one point or another by almost every child attending school. Under no circumstances is it aceptable. These suggestions are meant for parents to understand how to help your child manage a bully. Parents should always encourage their child to report any incidents to their teacher and to the parents. Teachers can be most helpful by talking to the class about consequences and the meaning of bullying. It is also important for children to be able to trust the adults in their life and to be able to ask for support. Bullies are often afraid of groups of children and tend to pick on children who are by themselves. It’s always good to be able to walk in school with friends. If this is not possible standing up to a bully and not allowing them to feel that hey have touched a sore point is one technique. Another is to not allow the bully to feel that he can intimidate or threaten you with violence. Adults are your best resource as are your friends.
Some of the most important things a parent can do is to 1. Share your own personal experiences about bullying when you were a kid, 2. Never be a silent bystander  3. Never let someone bully someone else, and 4. Tell an adult.

A bully is often doing his negative behaviors to feel superior and gain approval. A bunch of kids shouting that person down does two things. Number one, it gets the bully to notice that what he is doing is not socially acceptable. And it gives the victim a degree of support and reassurance.

Standing up to bullies and getting adult support are the two key behaviors to help a child manage bullying at almost every lever.  A good relationship with your child is key to developing the trust necessary for them to report any problems they may be having.
If your child feels the need to talk about any of these issues contacting a mental health provider is always an important option.