Certified Iyengar Yoga Teachers (CIYTs) undergo rigorous yoga training to in order to pass the yoga assessment. Candidates must study Iyengar yoga for several years before they can start preparing to become Certified Iyengar Yoga Instructors. Interested students must study with a yoga mentor who guides them through the Iyengar yoga assessment process. The mentor must also be a Certified Iyengar Yoga Instructor and be at a particular level of Iyengar Certification. To learn more about becoming a Certified Iyengar Yoga Teacher visit IYNAUS the Iyengar National Association of the United States.