The Sakya (Tibetan: ས་སྐྱ་, wylie: Sa skya, "pale earth") school is one of four major schools of Tibetan Buddhism, the others being the Nyingma, Kagyu, and Gelug. It is one of the Red Hat sects along with the Nyingma and Kagyu.
Read more about Sakya: Origins, Teachings, Subschools, Feudal Lordship Over Tibet, Sakya Today, The Rimé Movement