This report presents “counts of nonconsensual sexual acts, abusive sexual contacts, staff sexual misconduct, and staff sexual harassment reported to correctional authorities in adult prisons, jails, and other adult correctional facilities in 2009, 2010, and 2011. An in-depth examination of substantiated incidents is also presented, covering the number and characteristics of victims and perpetrators, location, time of day, nature of the injuries, impact on the victims, and sanctions imposed on the perpetrators ... Correctional administrators reported 8,763 allegations of sexual victimization in prisons, jails, and other adult correctional facilities in 2011, a statistically significant increase over the number of allegations reported in 2009 (7,855) and 2010 (8,404) ... About half of all allegations (51%) involved nonconsensual sexual acts (the most serious, including penetration) or abusive sexual contacts (less serious, including unwanted touching, grabbing, and groping) of inmates with other inmates. Nearly half (49%) involved staff sexual misconduct (any sexual act directed toward an inmate by staff) or sexual harassment (demeaning verbal statements of a sexual nature) directed toward inmates.”