The California Institution for Men (CIM) is a state prison located in Chino, California. It was established in 1941 and primarily houses male inmates who are classified as medium to high security. CIM offers various rehabilitation programs aimed at reducing recidivism and helping inmates reintegrate into society. CIM is part of the California Department of Corrections and Rehabilitation (CDCR) system. The facility includes multiple housing units and provides educational, vocational, and mental health services to support inmate development. Over the years, CIM has faced challenges related to overcrowding and inmate management, reflecting broader issues within the California prison system.