"The system of penalties for juveniles facing criminal charges in Russia is based on suspended sentences or detention in educational correctional facilities, which house young offenders aged up to 21 years. The average sentence is four years. Only one quarter of adult recidivists considered a high-risk to society are said to have been admitted to a VK [educational correctional facilities] as juveniles."
Source
United Nations Office for Drug Control and Crime. Illicit Drug Trends in the Russian Federation, 2005. Moscow, Russian Federation: UNODC Regional Office for Russia and Belarus, November 2006.