The purpose of this study is to investigate the effects of the Family-Involved Self-Determination Learning Model of Instruction (SDLMI) on academic engagement and goal attainment of middle school students with disabilities who exhibit problem behavior. Intervention was provided to the experimental group (12 students with their families and special educators) in Korean language classes for seven months while no treatment was provided to the control group (12 students). As a result, academic engagement in the experimental group, measured by behavior rating and direct observation, increased at a significantly higher rate than that of the control group. Also, the goal attainment of Korean language in the experimental group improved significantly compared to the control group. Finally, discussions of the results, limitations of the study, and suggestions for future studies are presented. (Contains 1 figure and 6 tables.)