Tib., sbyor drug
Although the Jordrukpa rarely appear in listings of the Tibetan traditions and/or schools, it is one of the so-called Eight Great Chariots of the Practice Lineage.
The school's name translates as Six Unions and its teachings concern mainly the practice of Kalachakra, which is why it is sometimes referred to as the Kalachakra School (dus 'khor).