Inclusive education, the cornerstone of transformative education, favors the learning and participation of students with special needs. When analyzing the practices between a special educator and a regular classroom teacher, a scarce collaboration in co-teaching and devaluation of the role is identified. The objective is to strengthen the planning dimension to strengthen the special educator's role. The research was guided by a qualitative approach and an action research design, from which a co-teaching agenda was created to strengthen the planning dimension. A special education teacher and a regular elementary school teacher participated. The results show achievements in all dimensions of co-teaching. The work with the agenda contributed to the organization, collaboration, and valorization of the role of the special education teacher. It is concluded that the Co-plan agenda is a valuable tool to facilitate professional collaboration and allows the transition from a blurred role of the special education teacher to a professional valorization.