Robbie's somewhat overstated aim is to create a new image for himself by taking steps like avoiding his mother's company on the way to the bus stop each morning, trading in his superhero underwear for plain white, and getting jeans. If his goals seem small and unassuming, so is Robbie; and his solutions—in one instance, simply asking his mother for what he wants instead of expecting her to mind-read—are ingenuously on target. But though Duffey is well tuned in to third-grade cool, she includes a stereotypical bully, held back a year and ready to tangle with anyone who looks at him the wrong way; worse, references to coolness and what kind of year Robbie is having are annoyingly repetitious. Nevertheless, modest aspirations mean modest rewards: readers Robbie's age will be glad to find their own concerns on nearly every page. Illustrations not seen. (Fiction. 8-10)