In Ethiopia, as the basis for any development endeavor, considerable attention and priority has been given to primary education. To this effect, the MOE has established partnership with NGOs to implement educational activities in general and Alternative Basic Education to promote primary education in particular. In practice, however, these activities were highly challenged by a number of problems. Thus, the main purpose of this study was to assess implementation of Nonformal Alternative Basic Education supported by NGOs. Based on this purpose, brief review of related literature and experience of some countries were assessed. Descriptive survey method was used for the study. Data were gathered from facilitators, government and NGO's officials, Center Management Committee members, primary school teachers, and previous ABE students. Data were collected from respondents through questionnaires, focus group discussion and document analysis. In order to select sample population purposive, random and availability-sampling techniques were employed. Appropriate statistical tools (the mean, standard deviation, t-test and one-way ANOVA) were used in order to analyze and interpret the data. The findings of the study revealed that though training was given to facilitators, the training given i17 relation to their duties and responsibilities were insufficient. Consequently, the performance of facilitators was found to be relatively poor. The study also showed that the salary paid for facilitators was unsatisfactory. On top of this, the contribution of Alternative Basic Education in the project area was found to be relatively good in solving the problem of the area. However, in the regional and national level it was not satisfactory. According to the findings deduced from the study, it was revealed that the relation between formal and ABE center was very low. Although community participation was encouraging, the commitments from the government side in supervision and monitoring were at low level. Moreover, the opinion and views of stakeholders towards the use of Alternative Basic Education were found to be positive, which may create fertile ground for expansion of Alternative Basic Education. Furthermore, it was found out that there were problems related to textbooks and reference materials, lack of facilitators' motivation, poor educational facilities, and scarcity of financial support of NGOs. These were the main problems that hinder the implementation of Alternative Basic Education. Hence, it is suggested that facilitators should be motivated and trained with relevant training in relation to their duties and responsibilities. For the success of Alternative Basic Education in promoting primary education, the respective government bodies, NGOs and the community should accomplish their responsibility in organized manner. In addition to this, the government and NGOs should sensitize and mobilize the respective community to expand Alternative Basic Education to underprivileged area