S.D. Codified Laws § 26-11A-12
The Department of Corrections may establish an aftercare supervision program to supervise juveniles in the community if they have been conditionally released from a department facility or program, the Human Services Center, detention, shelter, or a group home, group care center, or residential treatment center.
As part of an aftercare supervision program, the department may place a juvenile in foster care, with one or both parents, a guardian, conservator, or a relative of the juvenile or with another suitable person.
The terms, conditions, and duration of aftercare supervision shall be given in writing and fully explained to each juvenile placed on aftercare and a parent or custodian of such juvenile. The Department of Corrections may modify the terms, conditions, and duration of aftercare at any time.
SDCL 26-11A-12