A boarding school for troubled teenagers in Iowa that is being investigated by the FBI routinely kept pupils in small concrete "isolation boxes" for days or weeks and wouldn't let them out unless they sat in a specific posture for 24 hours, according to several former students.

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The academy says it provides "struggling teens with a safe, structured and disciplined environment." Many middle- and upper- class families from Midwest states and beyond sent misbehaving teenagers to the academy, which costs roughly $5,000 per month. Trane has said the students were fortunate to have its staff in their lives. Other supporters include parents who say the program saved teens' lives.

http://abcnews.go.com/US/wireStory/s...boxes-36913504