In the fourth book in the Carver Chronicles series, third grader Calvin is dealing with his next door neighbors moving away-and the school bully moving in. Meanwhile, competition at the school science fair is heating up, and Calvin must decide what to do when his data doesn't prove his theory. This lively installment in a chapter book series about a diverse group of elementary schoolers by Coretta Scott King Honoree Karen English offers spot-on storytelling, relatable characters and situations, and plenty of action.