“A humorous, high-interest package . . . a hit.” —  The Horn Book  (starred review) The endearing and mismatched pals Sparky the turtle and Joe the giraffe accidentally latch on to a big yellow bus and leave the zoo for their first trip to school. There’s a lot to learn, and the goal of the day seems to be to get a star. But just when Joe fears that he may have to go home starless, Sparky reminds him of all the ways that his loyal friend already shines.