The University of South Africa is the largest university on the African continent and attracts a third of all higher education students in South Africa. The university has over 300,000 students, including African and international students in 130 countries worldwide, making it one of the world's mega universities. Unisa is a dedicated open distance education institution. Open distance learning (ODL) entails a student-centred approach that gives students flexibility and choice over what, when, where, and how they learn, and provides them with extensive student support.