An Associated Press investigation finds that a business known for tough-love boarding schools for rebellious, rich teenagers has set its sights on a different demographic: adopted kids. Experts say adoptees account for an estimated 25-40% of those in residential treatment. What some call the “troubled teen industry,” a sprawling network of loosely regulated, for-profit residential treatment centers and boarding schools advertise to adoptive parents, promising to help adoptees heal, at a cost as high as $20,000 a month. Adoptees told AP they believe were in a shadow orphanage system where children end up institutionalized in oppressive, sometimes abusive facilities.