Bethuel Pakalitha Mosisili was born on 14 March 1945 at Qacha's Nek, Lesotho. He is an educator with bachelor of arts, master of arts, and master of education degrees in linguistics and education. For more than 10 years, Mosisili was a lecturer at the University of Lesotho (1972–83). He also taught at three South African universities: University of Fort Hare (1983–84), University of Transkei (1985–88), and University of Zululand (1989–93). In addition to his university teaching positions, Mosisili acted as external examiner in African languages and pedagogy for various universities. He maintains active membership in several academic associations, including the Lesotho Educational Research Foundation, African Languages Association of Southern Africa, and the Southern African Pedagogical Society. He is married and has two daughters and two sons.