Slated by Teri Terry

Kyla is on her way out of New London Hospital to a new family.  Her memories and personality have been wiped clean.  She is a blank slate with no knowledge of the past that caused her to have her mind wiped, and whether it was voluntary or forced on her.  What she does know is that this is her last chance.  Attached to her wrist is her Levo, a device that measures her mood and renders her unconscious, even dead, if she becomes angry or agitated.

Kyla goes to school with her new sister Amy and tries desperately to adjust to life in a stratified society where Slateds are outcasts.  She makes a friend in Ben, also a Slated. But something is wrong, Kyla finds anger rising up inside her and her Levo unreactive.  Dreams and surfacing memories plague her, and even her new mum and dad are not what they seem.

Fast paced with a warm heart and thriller storyline.  The Slated idea is a natural extension of what most teens feel, that they do not fit in the world they inhabit.  A good read.