This study proposes an evaluation model to measure the organizational effectiveness of Korean language education institutes. This study presents the structure of an evaluation model, to develop a set of evaluation components and a comprehensive evaluation model that can assess the organizational effectiveness of Korean language education institutes by adopting a competing values approach as a theoretical base. Then, using a pairwise comparison in the Analytical Hierarchy Process, the study shows how the relative degree of importance is different from the comprehensive degree of importance in the evaluation area, evaluation theme, and evaluation item of each evaluation component, as viewed through a survey of experts. The evaluation model of a Korean language education institute is based on the organizational effectiveness of a competing values approach and has four evaluation areas, 12 evaluation themes, and 36 evaluation components. The three expert groups rated “the nature of education and customer satisfaction” highest in the four evaluation areas, followed by the infrastructure of the organization (the stability of an organization and balance). For the comprehensive degree of importance in the evaluation themes, “customer support and system management” was rated highest, followed by “service responding to customer demands”, and “human resources management.” For the comprehensive degree of importance in the evaluation items, the evaluation items above were rated high. Successful organizational effectiveness suggests three important points: first, developing the responsibilities of Korean language education institutes, second, countermeasures in Korean language education institutes, and third, providing an opportunity to conduct self-assessment, providing various services and information to overseas students.