IYNAUS's mission is to spread the teachings of B. K. S. Iyengar and the Iyengar Family. The IYNAUS Board believes that central to that mission is helping Iyengar Yoga teachers promote their classes, to inform more people about Iyengar Yoga and to bring them its unique benefits. Students are urged to "Look for the Mark" in choosing a teacher — the Iyengar Yoga Certification Mark.