Molly Learns a Lesson: A School Story (American Girl Collection Series: Molly #2)

Molly is determined that the third-grade girls will win her school's Lend-a-Hand Contest to help the war effort. When they choose an idea that Molly knows will never work, she talks two friends into doing their own secret project. But the project turns out to be harder than Molly expected. Worried that it might not win after all, Molly decides to spy on the other girls to see how they are doing. When Molly and her friends get caught peeking in a window, they learn some important lessons.