Yard sales, ice-skating, and surprise parties are just a few of the things that make fourth grade fun. But Julio and his friends know it's time to get serious when the class begins preparing for the big statewide test at the end of the year. Just thinking about it is enough to give anybody a stomachache Julio and his best friend, Lucas, are going to try every superstition in the book to make sure they pass. They'll wear their underwear inside out,...