This book is about a child who is frequently teased and picked on. It demonstrates the difference between joking with a friend or schoolmate and hurtful teasing. Many children have been teased like Nellie.
This book is about how anyone can be a bully - even a child who is smaller or younger than another child. Jake is ashamed because he is being bullied by someone younger and he doesn't want to tell anyone.
This story describes what it means to be a bully and explains why someone might act like a bully. Here, the bully doesn't feel good about himself and, on op of that, he's jealous of Henry because Henry can play the violin.