Becoming a Certified Iyengar Yoga Teacher (CIYT™) begins with long term, thorough and dedicated practice. One is a student of Iyengar Yoga before becoming a teacher. For CIYTs, the Certification Mark demonstrates a commitment to maintaining the purity, excellence and high standards of Iyengar Yoga. CIYTs commit to teach the method set forth by B.K.S. Iyengar without mixing in other styles or disciplines. They maintain a regular personal practice, continue their training with a mentor, or by traveling to the Iyengar institute in India. In addition, CIYTs hold to ethical guidelines as set forth both by the B.K.S. Iyengar Yoga National Association of the United States (IYNAUS)and the Ramamani Iyengar Memorial Yoga Institute (RIMYI) in India.  

Assessment of teachers of Iyengar Yoga in the United States is carried out by IYNAUS. Certificates are provided by RIMYI. The process of assessment that leads to certification has been designed and refined over many years under the guidance of B.K.S. Iyengar, Geeta Iyengar, Prashant Iyengar and Abhijata Iyengar.

In July 2020, RIMYI updated the guidelines for the assessment and certification of teachers. Please find the Certification and Assessment Guidelines here. RIMYI also released an FAQ on the new guidelines. 

The IYNAUS Assessment Committee has created Mentoring Guidelines to supplement RIMYI's resources.