74:31:02:07Length of certification.
Section · Administrative Rules of South Dakota · View on sdlegislature.gov ↗
Certification expires one year and one day after a person successfully completes the examination. A person who successfully completes a refresher course within 90 days prior to or 90 days after the certificate's expiration date and applies for recertification within this 180-day time frame shall have the certification extended an additional year.
Source: 14 SDR 164, effective June 5, 1988; 16 SDR 88, effective November 14, 1989; 18 SDR 95, effective December 2, 1991; 35 SDR 88, effective October 27, 2008.