Since 1991, Tabeebullah Khan has founded three schools, with Purbanchal Jatiya Vidyalaya being the third, established in 2022. The three-year-old school is located on the outskirts of Tezpur, in Napam. Napam is about 10 kilometres from a cluster of at least 15 chaporis, which are riverine islands along the banks of the Jia Bharali River, a tributary of the Brahmaputra River. It is estimated that around 1.8 million people in the char and chapori population are Muslims of Bengali origin, commonly known as Miya Muslims. The remainder of the population, which constitutes just over one-fourth, belongs to various communities, including Mishing, Deori, Sonowal, Kochari, Nepali, and Bengali Hindus, among others.