The purpose of this study was to examine the possibility of a cooperative approach of general and special education to support students who need learning support through the cases of special education teachers who participated in the basic academic achievement support at a general school. The participants of the study is the case of four special education teachers who have experienced the participation of the basic academic achievement support team in elementary and secondary schools in Gyeonggi-do and Incheon Metropolitan City. Through in-depth non-face-to-face interviews with special education teachers and program operation data from unit schools, special teachers’ experiences in the operation process of basic academic achievement support programs and cooperative relationships between teachers were collected. As a result of the case analysis, special education teachers were using special education approaches such as the formation of individualized education support teams and the provision of multi-tiered support system in the process of implementing basic academic achievement support programs. However, the difference in teachers’ perception on educational support of targeted students and the lack of systematic diagnosis and identification of students who need special education were presented as difficulties. As an implication of the study, the use of a linked support system for general and special education based on the currently operated basic academic achievement support was presented.