"Bullying is a normal part of growing up."

Is the same as saying:

1) It's normal for my child to assault others when they don't like someone.

2) It's normal for schools be a place where beatings and emotional abuse take place.

3) Being beaten and traumatized is a normal learning experience for children, both for the child who assaults others and for the children being assaulted.

4) There is something wrong with a child who doesn't prosper under conditions of emotional and physical abuse.