This 1945 Newbery Honor winner is a classic and powerful novel about the effects of bullying. When students begin targeting a classmate who wears the same dress to school each day, she claims that she has 100 dresses at home. The bullying intensifies until the girl is pulled from school. The students are remorseful, but they realize they've lost their chance to apologize. This book is somewhat subtle, but readers who pay attention will be prompted to think about regrets and standing up for what's right.