Try your worst

Sadie Katz and Cleo Chapman have been rivals since birth. Literally. They entered the world competing to be the first baby born in the new year, and ever since Cleo beat out Sadie for that title, she has been nonchalantly beating Sadie at just about everything--and making it look easy. Now in the fall of their senior year, Sadie and Cleo are neck-and-neck for valedictorian. But then a string of increasingly serious pranks take over their high sch...