Pre-service early childhood education and care (ECEC) is undoubtedly still entrenched in developmentalist onto-epistemologies that limit the imaginations of both pre-service students and the faculty and instructors who teach such knowledges (Davies, 2022a(Davies, , 2022bDavies et al., 2022), in turn impacting children participating in ECEC. We write this introduction as three researchers, educators, practitioners and facilitators who are highly concerned about the current status quo of pre-service ECEC educationand its emphasis on developmentalismin Canada and internationally (Davies, 2021;Gibson et al., 2018;Krieg, 2010;Zaman and Anderson-Nathe, 2021). By so doing, we add our voices to the chorus of scholars who have shown why this entrenchment is highly problematic, and who offer alternatives to this dominant paradigm (e.g. see Cannella, 2005;Edwards et al., 2009;Kessler and Swadener, 1992;Taylor et al., 2016, to name but a few).What specifically inspired this special issue is our own experiences and conversations regarding the predominance of developmentalism as the taken-for-granted hegemonic knowledge formation in pre-service ECEC training and education. Where we are currently located in Ontario, Canadanot unlike other places in the worlddevelopmental psychology is forwarded as the 'base' or 'foundational' knowledge for pre-service ECEC. Such limited social imaginaries taught to preservice ECEC students present developmentalism as the 'rational' form of knowledge that preservice students must 'apply' in order to 'work with' children and families. Questions such as 'What do we do with this?' might emerge from developmentalist ECEC scholars and students who seek to maintain the status quo (Davies, 2022a;Snyder et al., 2019). However, through these questions come new opportunities for pausing and reconsidering the relationship between thinking and doing and theory and praxis (see Britzman, 2012;Freire, 1970).Throughout our experiences, which vary and include teaching ECEC at the undergraduate and/ or graduate level and/or working in pre-service ECEC, we have felt at an embodied level that who we are and the knowledges that we teach are unwelcome in pre-service ECEC. Despite 'belonging' commonly being the cornerstone of ECEC documentation and curricula (i.e. Ontario Ministry of Education, 2014), we question how normalcy has been entrenched within the fabrics of pre-service ECEC (Davies et al., 2022). In particular, this special issue seeks to contest the ways discourses and practices of normalcy are tethered to ideas of developmentalism in a manner that continues to reinforce and sustain a status quo engaged in the unjust practices of in/exclusion. The practices of in/exclusion referred to here offer a critical examination of the normative/developmentalist content that remains standard fare across degree programs in ECEC colleges and post-secondary institutions. Such ECEC programs subsequently sustain unjust practices that, as noted above, impact the everyday experiences of young children and early childhood edu...