The purpose of this study was to develop a learning disability case for a material and instruction course at a special education preparation program. The study followed the action research cycles (planning, doing, systematic observation and reflection, revising action, doing) to develop the case study.First of all, the researchers chose one student with learning disabilities as the case, and then wrote up the first version of case study based on the results of literature review. Second, the researchers got five experts' opinion to revise the case study. At the end, the researchers gave the case study to the participating teachers, and revised the case study again according to their suggestion.Furthermore, this study concluded some advantage and limitation to use the case study from all the research participants.