This paper describes a collaborative technical assistance project, which was co-constructed by the Ministry of Education (MINED) of El Salvador and the author, to support the advancement of inclusive education through culturally responsive professional development. This research-based project is presented as a model of culturally responsive professional development using the lens of intercultural competence. The author describes each phase of the project through the lens of intercultural competence that includes: (a) initial planning, (b) content proposals, (c) content development, and (d) content delivery. Implications and future research questions for those engaging in culturally responsive professional development-based technical assistance work are provided.