S.D. Codified Laws § 26-7A-118
Notwithstanding any other provision of this chapter, at least one custodial parent or guardian of any child who is the subject of child in need of supervision or delinquency proceedings under this chapter or chapter 26-8B or 26-8C shall appear at any hearing, except a hearing under § 26-7A-13, authorized by this chapter or chapter 26-8B or 26-8C. This provision does not apply to parents or guardians who are not residents of South Dakota nor to any state official or state agency. The absence of the parent or guardian need not result in postponement of the scheduled hearing, if the court finds good cause to proceed in the absence. If the parent or guardian, without reasonable cause, fails to appear at the scheduled hearing, a warrant may be issued requiring the parent or guardian to be brought before the court.
SDCL 26-7A-118