With more than 30 million books sold, the My Weird School series really gets kids reading! For this final installment of the My Weirder-est School arc, it's time to break out the caps and gowns! A.J. and his friends are graduating from third grade. Eeeeek! The kids have the chance to choose a guest speaker for the ceremony, and their minds are all set on one person: the most popular singer and rapper in the world, Lil Mouse! Will they be able to get their favorite celebrity and have the greatest graduation in the history of graduations?