Buddhism first reached Tibet in the 7th century. By the 8th century teachers such as Padmasambhava were traveling to Tibet to teach the dharma. In time Tibetans developed their own perspectives and approaches to the Buddhist path.
The list below is of the major distinctive traditions of Tibetan Buddhism. This is only a brief glimpse of traditions that have branched into many sub-schools and lineages.
Nyingma is the oldest school of Tibetan Buddhism. It claims as its founder Padmasambhava, also called Guru Rinpoche, "Beloved Master," which places its beginning in the late 8th century. Padmasambhava is credited with building Samye, the first monastery in Tibet, in about 779 CE.
Along with tantric practices, Nyingma emphasizes revealed teachings attributed to Padmasambhava plus the "great perfection" or Dzogchen doctrines.
The Kagyu school emerged from the teachings of Marpa "The Translator" (1012-1099) and his student, Milarepa. Milarepa's student Gampopa is the main founder of Kagyu. Kagyu is best known for its system of meditation and practice called Mahamudra.
In 1073, Khon Konchok Gyelpo (1034-l102) built Sakya Monastery in southern Tibet. His son and successor, Sakya Kunga Nyingpo, founded the Sakya sect. Sakya teachers converted the Mongol leaders Godan Khan and Kublai Khan to Buddhism. Over time, the Sakya school expanded to two subsects called the Ngor lineage and the Tsar lineage. Sakya, Ngor and Tsar constitute the three schools (Sa-Ngor-Tsar-gsum) of the Sakya tradition.
The central teaching and practice of the Sakyapa is called Lamdrey (Lam-'bras), or "the Path and Its Fruit." The headquarters of the Sakya sect today are at Rajpur in Uttar Pradesh, India. The current head is the Sakya Trizin, Ngakwang Kunga Thekchen Palbar Samphel Ganggi Gyalpo.
The Gelug school, sometimes called the "yellow hat" sect of Tibetan Buddhism, was founded by Je Tsongkhapa (1357-1419), one of Tibet's greatest scholars. The first Gelug monastery, Ganden, was built by Tsongkhapa in 1409.
The Dalai Lamas, who have been spiritual leaders of the Tibetan people since the 17th century, come from the Gelug school. The nominal head of Gelugpa is the Ganden Tripa, an appointed official. The current Ganden Tripa is Thubten Nyima Lungtok Tenzin Norbu.
The Gelug school places great emphasis on monastic discipline and sound scholarship.
In the 17th century the 5th Dalai Lama forcibly converted the Jonangs into his school, Gelug. Jonang was thought to be extinct as an independent school. However, in time it was learned that a few Jonang monasteries had maintained independence from Gelug.
Jonang is now officially recognized as an independent tradition once again.
When Buddhism arrived in Tibet it competed with indigenous traditions for the loyalty of Tibetans. These indigenous tradition combined elements of animism and shamanism. Some of the shaman priests of Tibet were called "bon," and in time "Bon" became the name of the non-Buddhist religious traditions that lingered in Tibetan culture.
In time elements of Bon were absorbed into Buddhism. At the same time, Bon traditions absorbed elements of Buddhism, until Bonpo seemed more Buddhist than not. Adherents of Bon consider their tradition to be separate from Buddhism. However, His Holiness the 14th Dalai Lama has recognized Bonpo as a school of Tibetan Buddhism.