S.D. Codified Laws § 13-28-6 (2026)
A pupil who is enrolled in school and becomes twenty-one years of age during the fiscal school year shall have free school privileges during that school year.
Source: SL 1955, ch 41 , ch 12, § 2; SDC Supp 1960, § 15.3002; SL 1971, ch 117 , § 3.