Divergent by Veronica Roth

In Divergent by Veronica Roth, Beatrice, or Tris as she likes to be called, grows up in a post apocalyptic society dominated by five factions, or groups of people that value a certain virtue.

She belongs to the faction called Abnigation, whichs values selflessness. There are four others in the city where she lives: Candor, a group which values honesty, Dauntless, which values courage, Amity, which values happiness, and Erudite, which values intelligence. She comes of age (which is 16) and is required to choose the faction she will be dedicated to the rest of her life. The problem is that when she takes her aptitude test, she is determined by the proctor to be "divergent". This troubles the proctor, a member of Candor, named Tori, who tells her to keep that to herself. Tori deletes the results from the computer so others can't see them, and manually enters the result that Tris leans toward Abnigation. However, Tris chooses to join Dauntless. This decision leads to a long set of trials, not the least being physcially and exhausting tests to determine if she is suitable to be a member of this faction of society. If she fails, she becomes one of the 'factionless' an undesirable group that is looked down on by others. But quickly she and her friends discover that there are more problems in their society than just being rejected by the factions. The leader of Erudite seems to have a sinister plan to take over. And Tris, being secrety a Divergent, somehow stands in the woman's way.