A decade has passed since Korea joined the OECD Development Assistance Committee (DAC) as its 24th member in 2010. The total volume of Korea’s Official Development Assistance (ODA) is approximately 2.2 billion USD, and has doubled over the past decade. Together with the quantitative achievements, Korea also has made endeavors to improve the quality of ODA implementation by establishing a proper legal foundation, policies, and strategies at the country level. In this regards, it is necessary for Korea to identify the challenges to overcome, and to establish mid-term or long-term strategy for better development cooperation to become a responsible middle-power donor country. Thus, the study aims to suggest long-term policy directions for international development cooperation through an assessment of Korea’s ODA performance over the past 10 years. To review in detail Korea’s achievements in the field of ODA since joining the OECD DAC, the study briefly analyzes the quantitative achievements to date and conducts a comprehensive study on implementation of major strategies and policies.