Definition - What does Jois Yoga mean?
Jois Yoga is an institute that teaches traditional Ashtanga yoga as it was developed by Sri K. Pattabhi Jois (1915-2009). Jois was instrumental in popularizing this ancient practice in the West. Ashtanga is a flowing style of yoga (vinyasa) that connects the breath with movement. Ashtanga is practiced via a specific series of poses; there are six series that are progressively more challenging.
Jois Yoga shala (studio) is based in Encinitas, California, where the instructors have been trained through parampara, the succession of passing knowledge directly from one guru to another. All Jois Yoga instructors can trace their guru lineage to Jois.
Yogapedia explains Jois Yoga
Jois founded what is now known as the K Pattabhi Jois Ashtanga Yoga Institute in Mysore, India, in 1948. Jois Yoga's instructors have been trained and certified at KPJAYI, so the philosophy and methodology remain true to their roots. Jois' grandson, R. Sharath Jois, serves as KPJAYI's director and main teacher.
The Mysore style of yoga practice is self-led in which the yogis memorize the postures and movements of the Ashtanga series and practice at their own pace in a group setting. In other words, the yogis don't practice in unison following the direction of their instructor. Instead, the instructor guides each individual practice.