For the first time in twenty-five years, Wayside School is back in session in this brand-new, fourth installment in the perennially beloved and bestselling series by Newbery Medal-winning author Louis Sachar. Welcome back to Wayside School! Your favorite students and teachers are all here. That includes Sharie, who loves her striped-and-spotted umbrella more than anything; Kathy, who has a bad case of oppositosis; Jason, who has to read the longest book in the world; and the rest of Mrs. Jewls's class on the thirtieth floor, who are busily collecting toenail clippings. Everyone is scrambling to prepare for the all-important Ultimate Test, but meanwhile, there is a mysterious Cloud of Doom looming above them...More than fifteen million readers in the U.S. have laughed at the clever and hilarious stories of Wayside School. So what are you waiting for? Come visit Wayside School!