In this essay, I argue that we should radicalize managerial climate change education given that incremental and accommodative forms of responsible management learning and education (RMLE) are at odds with the urgency, nature, and magnitude of the climate crisis. I argue for three practices to radicalize RMLE, and illustrate them through examples from a degrowth context. First, management educators should engage in anti-paradigmatic performative politics to disrupt the reality-making of climate damaging theories, and "realize" better alternative theories. Second, as management educators, we should engage ourselves, our students, and wider stakeholders in anti-paradigmatic thought that transcends and challenges problematic mainstream management paradigms. Third, we should explore what and how we and our students can learn from radical climate movements' civil disobedience, in order to disrupt climate-damaging practices. In this paper, I aim to provoke and facilitate urgently needed discussions about the radicalization of RMLE for climate change education and beyond. Therefore, I close this essay with an invitation for rejoinders and suggest salient implications for educational practitioners and researchers.