"A pleasing addition to a series in which diverse readers can recognize themselves in starring roles." --Kirkus Reviews

"Another warm and approachable outing with the Carver School] gang." --The Bulletin

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 offers spot-on storytelling, relatable characters and situations, and plenty of action.