Of the 7,000 investigations completed by the [Justice] department, about one-third of cases, or about 2,100, were substantiated, the report said.That staff are alleged to commit prison rape as much or more than prisoners comes as a surprise to to me. I know some of that's retaliatory -- false allegations from angry prisoners -- but upon reflection, confirmed instances crop up pretty frequently. Here in Austin, for example, the crux of a prison rape case a few years ago against staff at the Travis State Jail (then operated by the private prison company, Wackenhut) centered on staff-on-inmate situations.
Nearly 42 percent of reported cases of sexual violence involved prison staff abuse of inmates, while 37 percent was inmate-on-inmate violence.
Males comprised 90 percent of inmate-on-inmate violence.
The report also noted that sexual violence in state-run youth prison facilities was 10 times higher than that in adult prisons.
See the full study here (pdf), and responses from watchdog groups Stop Prison Rape, Watching Justice, and the Committee on Safety and Abuse in America's Prisons.