Atiśa in the context of Dromtön

The Pāla Empire was the empire ruled by the Pala ("protector" in Prakrit & Sanskrit) dynasty, a medieval Indian dynasty which ruled the kingdom of Gauda. The empire was founded with the election of Gopāla by the chiefs of Gauda in late eighth century CE. The Pala stronghold was located in Bengal and eastern Bihar, which included the major cities of Gauḍa, Vikramapura, Pāṭaliputra, Monghyr, Somapura, Ramavati (Varendra), Tāmralipta and Jagaddala.

The Pālas were astute diplomats and military conquerors. Their army was noted for its vast war elephant corps. Their navy performed both mercantile and defensive roles in the Bay of Bengal. At its zenith under emperors Dharmapala and Devapala in the early ninth century, the Pala empire was the dominant power in the northern Indian subcontinent, with its territory stretching across the Gangetic plain to include some parts of northeastern India, Nepal and Bangladesh. Dharmapala also exerted a strong cultural influence through the Buddhist scholar Atis Dipankar in Tibet, as well as in Southeast Asia. Pala control of North India was ultimately ephemeral, as they struggled with the Gurjara-Pratiharas and the Rashtrakutas for the control of Kannauj and were defeated. After a short-lived decline, Emperor Mahipala I defended imperial bastions in Bengal and Bihar against South Indian Chola invasions. Emperor Ramapala was the last strong Pala ruler, who gained control of Kamarupa and Kalinga. The empire was considerably weakened with many areas engulfed and their heavy dependence on Samantas being exposed through 11th century rebellion. It finally led to the rise of resurgent Hindu Senas as sovereign power in the 12th century and final expulsion of the Palas from Bengal by their hands marking the end of the last major Buddhist imperial power in the subcontinent.

The Gelug (/ɡəˈluːɡ/, also Geluk; lit. 'virtuous') is the youngest of the four major schools of Tibetan Buddhism. It was founded by Je Tsongkhapa (1357–1419), a Tibetan philosopher, tantric yogi and lama and further expanded and developed by his disciples (such as Khedrup Je, Gyaltsap Je, Dulzin Drakpa Gyaltsen, and Gendün Drubpa).

The Gelug school is alternatively known as Kadam (bKa’-gdams gsar-pa), since it sees itself as a continuation of the Kadam tradition of Atisha (c. 11th century). The school of New Kadam, or New Kadampa is an offshoot of the Gelug-tradition. Furthermore, it is also called the Ganden school, after the first monastery established by Tsongkhapa. The Ganden Tripa ("Ganden Throne Holder") is the official head of the school, though its most influential political figure is the Dalai Lama ("Ocean Teacher"). Allying themselves with the Mongol Khans, the Gelug school emerged as the dominant Buddhist school in Tibet and Mongolia since the end of the 16th century (religiously and politically). Another alternative name for this tradition is the Yellow Hat school or sect.

Khedrup Gelek Pelzang, 1st Panchen Lama (1385–1438 CE) – better known as Khedrup Je –  was one of the main disciples of Je Tsongkhapa, whose reforms to Atiśa's Kadam tradition are considered the beginnings of the Gelug school of Tibetan Buddhism.

Khedrub Je is considered to be an emanation of Manjusri, the Buddha of Wisdom.

The Kadam school (Tibetan: བཀའ་གདམས་པ་, Wylie: bka' gdams pa) of Tibetan Buddhism, or Kadampa was an 11th century Buddhist tradition founded by the great Bengali master Atiśa (982–1054) and his students including Dromtön (1005–1064), a Tibetan Buddhist lay master. The Kadampa stressed compassion, pure discipline and study. By the 15th century, Tsongkapa is credited with synthesizing and folding Kadampa lineages into the Gelug school.

The most evident teachings of that tradition were the graduated teachings on the Mahayana path. These special presentations became known as lojong (mind training) and lamrim (stages of the path). Kadam masters like Atiśa also promoted the study of madhyamaka philosophy. According to Ronald M. Davidson, "Atiśa's coming to Tibet in 1042 was the threshold moment in the efflorescence of Buddhism and provided a stable foundation for monastic scholarship for the next thousand years."

Maitrīpāda (c.  1007–1085, also known as Maitreyanātha, Advayavajra, and, to Tibetans, Maitrīpa), was a prominent Indian Buddhist Mahasiddha associated with the Mahāmudrā transmission of tantric Buddhism. His teachers were Shavaripa and Naropa. His students include Atisha, Marpa, Vajrapani, Karopa, Natekara (also known as Sahajavajra), Devākaracandra (also known as Śūnyatāsamādhi), and Rāmapāla. His hermitage was in the Mithila region (also known as Tirhut), somewhere in northern Bihar and neighboring parts of southern Nepal.

Vikramashila (IAST: Vikramaśilā) was a Buddhist monastic university situated in what is now modern-day Bihar in India. It was founded by King Dharmapala between the late eighth and early ninth century.

It was one of the three most important Buddhist Mahaviharas of its time in India, along with Nalanda and Odantapuri. Its location is now the site of Antichak village near Kahalgaon, Bhagalpur district in Bihar. It was one of the largest Buddhist mahaviharas, with more than one hundred teachers and about one thousand students. It produced eminent scholars who were often invited by foreign countries to spread Buddhist learning, culture and religion including Atiśa and Ratnākaraśānti.