, "pale earth") school is one of four major schools of [//en.wikipedia.org/wiki/Tibetan_Buddhism Tibetan Buddhism], the others being the [//en.wikipedia.org/wiki/Nyingma Nyingma], [//en.wikipedia.org/wiki/Kagyu Kagyu], and [//en.wikipedia.org/wiki/Gelug Gelug]. It is one of the [//en.wikipedia.org/wiki/Red_Hat_sect Red Hat sects] along with the Nyingma and Kagyu.