SD TMU Resources

D&S Diversified Technologies (D&SDT) - Headmaster, LLP, is the Board's approved vendor that administers the SD CNA knowledge exam (test). Headmaster's uses a software platform called TMU©, which stands for TestMaster Universe.

TMU© allows nurse aide instructors to register students for the SD CNA knowledge exam. TMU© also allows students to update their profiles and view their exam results. Review the following instructor and student TMU© how-to guides to learn helpful information about the exam.

TMU© Instructor How-to Guides

TMU© Student (Candidate) How-to Guides

Headmaster Contact Information

  • Contact Headmaster at southdakota@hdmaster.com if you are unable to find answers to your questions on: knowledge testing process, test scheduling, eligibility to test, payment of exam fee. More information is also available at hdmaster.com
  • You may also call them Monday through Friday, 7:00 AM to 7:00 PM Central Time at 800-393-8664.

Board of Nursing Contact Information

If you have questions on CNA training programs, skills evaluation process, email sduap@state.sd.us; or call 605-362-2760, Monday through Friday, 8:00 AM to 5:00 PM Central Time.

Page Updated: 5/4/2026 3:44:18 PM