There has been a growing consensus in the national and international aid architecture that sporadic or scattered aid modality should be avoided. This study conducted a comprehensive cluster evaluation on Korea’s agricultural ODA to Rwanda between 2013 and 2017, with two newly devised indexes: Cluster Performance Index (CPI) and Resource Allocation Index (RAI). Every Korean agricultural ODA project was categorized into five clusters and numerically evaluated against criteria widely used in the evaluation of development projects: relevance, efficiency, effectiveness and sustainability. Our cluster evaluation reveals that projects are mostly planned appropriately, but in some clusters, large amounts of the budget have been invested in poorly planned projects. Regarding efficiency, there was considerable room for improvement in all clusters. Particularly, in the Monitoring and Evaluation (M&E) category, all clusters scored below average. Concerning performance evaluation, all clusters scored relatively high in effectiveness, specifically in goal achievement. Lastly, in terms of sustainability, risk management was found to be relatively inadequate in all clusters. Based on the lessons from the aforementioned observations and analysis results, this study suggests ODA quality can be improved by optimizing budget allocation, improving monitoring efficiency, creating synergistic effects through cluster linkage, and developing agricultural value chain program.