Take A Sad Song, by Ona Gritz

When the police come to apprehend Jane at a party, she demands to speak with her mother, only to find that it is her mother that called the police in the first place.  Declared incorrigible by her Mom and the courts, Jane is sent to Spofford and then to a year at the New York State Training School for girls in Hudson.  In 1970, your parents or just about any adult could get a child locked up and sentenced to servitude.  

On the inside, Jane suffers through abuse, bullying, and solitary confinements.  To cope, she becomes part of a pseudo family that the girls call "The Racket" whose members look out for each other and lend each other emotional support.

Told in brisk verse, this engaging story is far too short.  What's on offer is teasingly brief.  It's sufficient to tell the story and whet the appetite, but there's a meatier novel yet to write with this material.  Indeed, it could have benefitted from more fleshing out of the girls' backgrounds and the relationships they have with each other.