Siblings, Friendship, School 

Although it's a drag to be constantly mistaken for each other, in truth, during those first days at a new school, there's nothing better than having a twin brother there with you. But on day one of sixth grade, Ray stays home sick, and Jay is on his own. No big deal. It's a pretty nice school, good kids, too. But Jay quickly discovers a major mistake: No one seems to know a thing about his brother. Ray's not on the attendance lists, doesn't have a locker, doesn't even have a student folder. Jay almost tells the school -- almost -- but then decides that this lost information could be very...useful. And fun.

As Ray and Jay exploit a clerical oversight, they each find new views on friendship, honesty, what it means to be a twin -- and what it means to be yourself. Entertaining, thought-provoking, and true-to-life, this clever novel is classic Andrew Clements times two: twins!