; (ii) provide equipment to facilitate occupational and vocational training or employment opportunities for prisoners; (iii) employ prisoners; or (iv) assist prisoners in prerelease custody or supervised release in finding employment. (D) Industry-sponsored organizations that deliver workforce development and training that lead to recognized certification and employment. (4) Assignments In assigning prisoners to recidivism reduction programming and productive activities, the Director of the Bureau of Prisons shall use the Post-Sentencing Risk and Needs Assessment System described in section 3621A and shall ensure that— (A) to the extent practicable, prisoners are separated from prisoners of other risk classifications in accordance with best practices for effective recidivism reduction; (B) a prisoner who has been classified as low risk and without need for recidivism reduction programming shall participate in and successfully complete productive activities, including prison jobs, in order to maintain a low-risk classification; (C) a prisoner who has successfully completed all recidivism reduction programming to which the prisoner was assigned shall participate in productive activities, including a prison job