I'm looking for a futuristic science fiction novel. I can only distinctly remember a few things:
The book takes place in a society where children are in school until it is decided they are ready, and then taken for a job that is decided by the "government".
It is about a girl who is taken into the "government building". When she is left alone she wanders around despite being told not to. She finds a girl in a container who is attached to glass tubes.
The girl escapes the city to the unsafe outskirts and goes on a journey.
Does anyone know the name and author of this story?