Bullies rarely confront a victim alone, preferring an appreciative audience. Bully proofing you child involves changing some of these aspects. Encourage your child to stay with groups of friends. Bullies generally pass over victims that have even one or two friends with them. Encourage your child to voice his objections.
Bullies prefer victims who suffer in silence.
Practice role-playing with your child at home until your child can firmly tell someone to stop picking on him. Arm your child with funny comebacks. Teach your child to carry himself with confidence. Actions can be learned, even without the internal confidence to back them up. Bullies chose their victims based on an appearance of weakness, so teach your child to stand up straight and look people in the eye - especially when confronted.