Headmaster partners with the Missouri Department of Health and Senior Services to provide Certified Nurse Aide testing and registry services for the Missouri health care community.
Candidate Handbook and Mock Skills updates are effective September 1, 2025.
Sign in to register, schedule, renew, and manage Missouri nurse aide testing.
Updated January 2026. Download to your device before test day.
Start in Missouri TMU to complete your account, schedule testing, and renew certification. Review exam instructions and the Candidate Handbook before test day.
Test calendar and related Missouri testing updates.
Accessible version of the Missouri Candidate Handbook.
What to expect for the knowledge exam.
Instructions if you are taking a remotely proctored knowledge exam.
What to expect for the skill test.
TMU candidate guide for signing in and recovering your account.
Finish setting up your TMU candidate account.
Schedule or change a Missouri nurse aide test event in TMU.
Renew Missouri CNA certification through TMU.
Renew and print your Missouri nurse aide certification in TMU.
Request testing accommodations.
Request a refund of testing fees that have already been paid.
Request a review of your exam results.
Recording forms, mock skills, webinar materials, and TMU sign-in guidance for Missouri nurse aide instructors.
Text version of the webinar on upcoming nurse aide testing changes.
Recording form used during skill testing.
Effective for testing September 1, 2025.
TMU facility and instructor guide for signing in and recovering an account.
Apply to become a Missouri RN Test Observer and review equipment and training guidelines.
Apply online to become a Missouri RN Test Observer.
Print and keep a copy for your reference.
Referenced in the TASE-RN Test Observer application.
Referenced in the TASE-RN Test Observer application.
Guides for training programs entering candidates in TMU, completing or incompleting training, paying testing fees, employer-initiated renewal, and reading program reports.
Add candidates to TMU when training begins.
Mark training complete for candidates who finish successfully.
For candidates who do not successfully complete training.
Payment guidance for training programs and sponsoring facilities.
Payment form for Missouri training program facilities.
How employers renew employee certification in TMU.
Accessing and understanding training program reports in TMU.
Apply to become a test site, review the agreement and equipment list, and request test dates.
Apply online to become a Missouri nurse aide test site.
Referenced in the test site agreement application. Updated January 2026.
Required equipment for Missouri nurse aide skill testing.
For training programs. Request a test date.
Test Administration Services Entities hire and supervise local RN Test Observers and testing teams. Use the Missouri TASE agreement to get started.
D&S Diversified Technologies / Headmaster
PO Box 6609
Helena, MT 59604
Testing toll-free: 888-401-0462
Registry toll-free: 888-401-0465
Fax: 406-442-3357
Email: missouri@hdmaster.com