The study was aimed at investigating challenges hampering mother-tongue education with special reference to Afan Oromo in the Eastern Hararge Zone, the Oromia Regional State, Ethiopia. The study mainly explored the available learning materials and the skilled teachers in mother-tongue education, attitudinal factors, the extent of stakeholders’ support for mother-tongue education, parents’ education and their awareness about education through mother tongue and parent school involvements. In the study, the researcher used a mixed method approach in which both quantitative and qualitative research designs were employed to corroborate the data obtained through one method by using other methods to minimise limitations observed in a single design. In the quantitative design, survey questionnaires were employed. Accordingly, 634 primary school teachers and 134 students were randomly selected and asked to fill the questionnaires. These quantitative data were analysed through the SPSS software and responses were analysed using the percentages and the chi-square. Qualitative data obtained through in-depth interviews and observations were analysed using thematic approaches. Documents on education policy, constitutions of the country and reports of the Ministry of Education of Ethiopia were also consulted and integrated with the analyses of the data. The study generally suggests unless strong political and administrative supports are given and public awareness about the mother tongue use in education and development is created, the effort to make Afan Oromo the language of education, intellectuals and development may remain fruitless. In this respect, all the stakeholders, intellectuals and leaders must work together to overcome challenges and dilemmas that impede the implementation of mother-tongue education. The practical works on the ground should match with the language policy of the country. Popular awareness raising activities and mobilization of the communities should be carried out carefully to involve all the communities / African Languages