The Divergent Aptitude Test
Divergent is a book by Veronica Roth, based on 16 year olds taking an aptitude test. They have to pick a faction. Tris is divergent, but chooses Dauntless, which is dangerous.
There are 5 factions: Amity, for the hippies. Candor, for the Catholics. Erudite, for the intelligent snobs. Abnegation, for the people who love everyone. And Dauntless, for the sword swallowers.