It's back to school for the New York Times bestselling Cat when he steps in as a substitute teacher. Cat is not pleased to be tapped as substitute teacher. Not only is it cutting into his naptime, but a roomful of kittens is a little . . . much. At school, Cat follows the lesson plan of music, building, and painting—only in gradually more mischief-making Cat style. By the end, Cat has learned a thing or two about inspiring others by being himself. But even more heart-melting and humorous is what these adorable kittens have learned from Cat. Read it for back-to-school and year-round—great as a holiday or year-end teacher's gift! "[A] heart warmer." —The Wall Street Journal ★ "Plenty to giggle over." —Publishers Weekly (starred review) Just purrfect." —The Washington Post Clever . . . Droll. —The Horn Book "Amusing . . . has much to offer. —School Library Journal "Adorable." —Common Sense Media