upstairs has an auditorium and a walled-in projection room. A cemetery containing graves of children of the former state school who died there is located across Business Highway 36. Hilltop houses a program for female young offenders, located in the main Hilltop school. As of 2002 about 15 girls are in the program. The Hackberry Unit houses a Parole Modification and a Substance Abuse Felony Punishment Facility. Hackberry is no longer part of the Hilltop Unit. References External links "Hilltop Unit." Texas Department of Criminal Justice. Prisons in Gatesville, Texas Women's prisons in Texas Government agencies established in 1981 1981 establishments in Texas Buildings and structures in Coryell County, Texas