This essay's main objective is to develop a theoretical, ontological basis for critical, social justice-oriented science education. Using Deleuze and Guattari's notion of assemblages, rhizomes, and arborescent structures, this article challenges authoritarian institutional practices, as well as the subject of these practices, and offers a way for critical-social justice-oriented science educators and students to connect with sociopolitical contexts. Through diagramming institutional and community relationships using DG's theory of assemblages, we envision new ontological spaces that bridge social and material entities. A conceptualization of science education through DG's philosophy of rhizomes and assemblages allows educators to merge critical, post-foundational perspectives with questions of ontology: not just what exists, but what could exist in terms of human social organizations (governments and community groups), inorganic matter, microorganisms, and plant/animal populations.