7l1e purpose of this study was to assess the contributions made by USAfDIAED tornpromote quality of primary education in Addis Ababa City Administration. To conductrnthe study. descriptive survey method was employed assuming that it helps to gather arnlarge variety of data related to the problem under consideration. The samples coveredrntwo woreda cluster resource centers and f I schools clusters. principals of clusterrnschools. supervisors. teachers. KETB members. City Administration and sub-Cityrneducation officials and USAiDIEQUfP jj stafJmembers. The samples were selected usingrnpurposive sampling methods. The instrument used to collect data Fom educationrnofficials. cluster school principals. supervisors and teachers was questionnaire. interviewrnwas used to collect information to supplement the questionnaire Fom City AdministrationrnEducation Bureau and sub-City education officials. and project coordinators at Nationalrnand City levels. Semi structured focus group discussion was also held with purposefiLilyrnselected supervisors. teachers and PTAs. Moreover. a jield observation using checklistrnwas carried in the sample schools and document analysis was also done. The primaryrndata analysis was carried employing percentile statistical techniques. 77,e study revealedrnthat USAfDIAED contribution to enhance quality of primary education using ClusterrnSystem approach was significant. To realize its objective USAiDIAED has conductedrnvarious trainings that focus in developing teachers' professional competency. The inservicernteacher development program has introduced Active learninglstudent centeredrnteaching method and continuous assessment methodology in the schools. Pedagogicalrnsupport and supervision capacity has been strengthened at Woreda Cluster and SchoolrnCluster level. USAIDIAED has also contributed in enhancing the capacity of leadershiprnand management of education to significant level. The trainings conducted In use ofrnvarious planning tools (PMfS. MiS and Projection Model) for strategic planning havernenhanced the capacity of education personnel to plan for quality education. 77,e studyrnalso found that the implementation of the project has limitations. The trainings providedrnwere single shot trainings and there was no/allow-up support to principals. supervisors.rnteachers or education personnel who were trained by the project. There was also highrnturnover o.feducational personnel which became obstacle to implement properly the skillrnand knowledge of training. The jinancial support provided by the project to clusterrnschools to run trainings was insignificant in relation to the duties and responsibilitiesrngiven to cluster schools. The study recommended that USAIDIAED and CityrnAdministration Education Bureau must take remedial measures to jill the gap and sustainrnthe programs implemented by the project. The good practices of strengthening therncapacity of teaching force should be scaled up and included in City AdministrationrnTeacher Development and School Improvement Programs ofCEQIP