This is book number 1 in the Divergent Trilogy series.
“In Roth's harsh future, people are divided into five factions: Abnegation, Amity, Candor, Dauntless, and Erudite. When you reach the age of 16, you are tested to see where you are best suited and then give a choice. That choice will affect everything, including where you live, what you believe, and whom you will befriend. Beatrice grows up in Abnegation but chooses Dauntless for her future. She has no idea how dangerous that choice is for her, especially as she has tested Divergent -- showing traits of more than one faction. Divergents are wild cards. And wild cards are dangerous. This is a fast-paced all-action page-turner that held me captive from beginning to end.”
— Angela Mann, Kepler's Books & Magazine, Menlo Park, CA