Four housemates hit and punched the boy until neighbors intervened, according to police reports.
"It's an extremely troubling thing," Cook County Public Guardian Robert Harris said.
Lutherbrook administrators said that this is not typical.
"We strive in all respects to maintain a really safe environment for kids here," Executive Director Brent Diers said.
Still, in 2011 and 2012, Addison police received more than 570 calls for service from Lutherbrook.
You can read the full story in the Daily Herald's edition from Sunday, July 28, 2013, or online at dailyherald.com.