There are two Buddhist schools in the world primarily which is founded in 3rd century B.C in the first world convention of Buddhist into two primary school known as Mahayana and Hinayana. In the lapse of time, Buddhism spread in various parts of world and some of the great leaders of Buddhist religion migrated to the different parts of world. Among many some arrived to Nepal and some to Tibet in about 3rd century B.C. and 7th century A.D. respectively. While the Buddhism arrived in Tibet, in the lapse of time, several different thoughts started to emerge and they have founded different sects of Buddhism in Tibet.

This sect founded in 11th century which is also known as the red hat sect and is the oldest sect of Tibetan Buddhism. The sect paid great attention to absorbing the fine points of the Bon religion and at the same time, did its best to locate Buddhist sutras secreted away the religion moved to suppress Buddhism. The word signifies the oldest one in which the monks wore red hats and they based their faith in tantrism.

This sect explains primarily the study of exoteric teachings, with later emphasis on tantrism. This word in Tibetan refers the instruction and teachings of Buddha. This doctrine was promoted far and wide and thus exerted great influence on various Tibetan Buddhist sects.

The term in Tibetan means the white land. This sect was founded on 18th century along with the sakya monastery of Tibet which is the most important monastery of Tibet. This monastery is painted with different colours such as red, white, and black strips which symbolizes the wisdom Buddha, doddess of mercy and the diamond hand Buddha. This sect is also known as a stripe sect which has ever increasing influence and helped to build the one of the influential sect in Tibetan Buddhism which had also the power to rule the kingdom of Tibet in the past.

This sect was founded in 11th century which stresses the study of Tantrism and advocates that tantrist tenets be passed down orally from one generation to another. The main gurus of this sects wore which rob so this sect is also known as a white sect.

This sect was founded in 15th century which is the most famous sect in Tibetan history. This sect was founded during the reformation period of Tibet by one of the famous ruler of Tibet. In that time upper class monks involved in political and economic power struggle led a decadent life and rapidly lost popularity with society. Faced with situation, zongkapa called for efforts to follow Buddhist tenets. He proceeded to undertake lecture tours in many areas and wrote books accusing decadent monks of failing to abide by Buddhist tenets. Zongkapa spared no effort to press ahead with Buddhist reform. For example, in the first month of 1409 according to Tibetan calendar, Zongkapa initiated the Grand Summons Ceremony in Lhasa's Jokhang Monastery. The ceremony remains in practice even today. This effort was closely followed by the construction of the famous Gandain Monastery and the founding of the Gelug Sect which was famous for its strict adherence to commandments. The Tibetan language meaning of Gelug is "commandments''. Zongkapa and his followers wore yellow hats, and thus the Gelug Sect is also known as the Yellow Sect. Since its founding, the Yellow Sect has built the Zhaibung, Sera, Tashilhungpo, Tar and Labrang monasteries, which join the Gandain Monastery as the six major monasteries of the Gelug Sect. The Yellow Sect is also known for formation of the two largest Living Buddha reincarnation systems - the Dalai and Bainqen systems