Publisher's blurb: Up2U Adventures--where the ending is Up2U! Ana thinks that her new school is very strange. Middlehurst Elementary School has a lot of rules. And everyone follows them. Or else. When Ana and her new friend Bryce discover a secret passage, they know that something suspicious is going on. Will they discover the school is a secret training ground, an illegal experiment, or something else? The ending is Up2U, so which ending will you choose? Aligned to Common Core Standards and correlated to state standards.