methodological issues. The discussion or development of mixed methods also can benefit from experiences based on the application of mixed methods in the field. Practical feedback can provide insightful information about strategies used in combining different methods, and the opportunities and challenges faced in such applications. This type of information could energize the future development of mixed methods. Theory-driven evaluations have frequently applied mixed methods in the past (Chen, 1990, 1997, 2005). The purpose of this article is to discuss some practical experiences of using mixed methods in theory-driven evaluations. More specifically, in this article, I will discuss the conceptual framework and strategies used in theory-driven evaluation that apply mixed methods and the opportunities and challenges emerging from such applications.