The purpose of this study is to analyze the action research process on support of regionally-linked curriculum in schools conducted by graduate school dispatched teachers, and to examine the role of dispatched teachers in regional educational cooperation and the implications of practice research on regionally-connected education. To this end, the research team composed of trainees dispatched to the graduate school carried out support activities to activate regional-linked educational activities within the school curriculum and to encourage teachers to step outside the school and connect with the village. Specific support activities include provision of regional-linked curriculum materials, online map production (local educational resource mapping), connection of villagers, and support for village feasts. As a result of this action research, the support for regional-linked educational activities by dispatched teachers not only helped schools to operate regionally connected curriculum, but also provided an opportunity for dispatched teachers to support unit schools and grow as experts in local education. The following are the implications obtained through the participatory action research of dispatched teachers. First, the school support activities of dispatched teachers provided an opportunity to reflect on the role of dispatched teachers and rethink the meaning of graduate school training. Second, it is meaningful as an activity that helped to improve school education activities by matching the areas that needed support from local schools with the expertise that graduate school dispatched teachers have accumulated as teachers. Third, the participatory action research of dispatched teachers has the meaning of linking the parts learned at the graduate school with the school field.