PurposeThis paper reports a qualitative research study of comparative analysis of global citizenship education (GCE) in two primary schools, one international school in Singapore (Stamford International) and an independent school in Australia (Coastal College). The research focussed on how these two schools implemented GCE through the adoption of international education models, utilising the International Primary Curriculum (IPC) or the International Baccalaureate Programme (IB), creating hybrid curricula. Central to this research is the examination of educational practices, which address global citizenship education in each of the two schools.Design/methodology/approachQualitative data from interview transcripts, document analysis, website analysis as well as field notes were analysed both inductively and deductively, teasing out the key themes from interviews, various documents such as policy papers, curriculum materials, syllabuses, the websites and other forms of documents that shed more light on the issues presented. The analysis of each case study began with a brief overview of the global citizenship education policies in the two schools and of their international curricula models, followed by a separate interpretation and juxtaposition of interview data (Phillips and Schweisfurth, 2014).FindingsThe key focus is examining the interplay between the global and national, which both schools have acknowledged in their design of the curricula. It is integral to note that globalization differs within different communities around the world with a unique and multifaceted interplay of global and national factors termed as a “global-local nexus”. A key overarching finding relates to the tensions between educational domains and neo-liberal market rationales, which had affected the schools' decisions in curricula and GCE enactment within both schools. Despite their commitment to GCE ideals, schools were mindful about being distinctive and remaining competitive within their educational markets.Research limitations/implicationsIn the study, the ideas of hybridity and “mixture and fusion” of curricula elements to generate new practices in local contexts against global influences have been explored. These ideas form the key features of the curriculum design in both schools and of the contexts in which the schools were situated. Even though the selected case study schools were international and independent and were not expected to fully adhere to government guidelines from their respective country’s policies, they were staged against these policies, which in turn influenced the curriculum initiatives and pedagogical approaches of these schools. Thus studying the landscape in which these two schools are situated provided a better understanding of the various influences – geo-political, formal policy, school-specific factors – which contributed to the knowledge base of global citizenship education studies for multi-ethnic nations such as Singapore and Australia.Practical implicationsAs more national school systems embrace diversity, an international education approach has been adopted. This study affirms the idea proposed by Hayden, Thompson and Bunnell (2016), that the use of “international” is less relevant in categorising schools that seek to embrace GCE. It is more appropriate to use “cosmopolitan,” as proposed by Rizvi (2008), where the focus is more broadly on acquiring knowledge about cultural trajectories and social identities and reinforcing the idea of global connectivity as is evident in both case study schools. The focus is on understanding and acting on local issues within the “broader context of the global shifts that are reshaping the very nature of localities” (Rizvi, 2008, p. 21). One of the key things to note is that the global and international approaches are seldom enacted in their pure form. Schools that have adopted international education are usually unique and heterogeneous in nature, and what they have done is very much dependent on their histories, their geographical locations and the economic and political statuses. This is evident in both case study schools.Social implicationsThis study has added to the existing literature by providing a rich comparative investigation of global citizenship education in two countries, Australia and Singapore. The research provided the opportunity to study different models of internationally minded schools, with similar GCE ambitions. As the study explored two types of schools in two different countries, there is no claim of generalisability of findings to all the schools in these two countries. However, educators and researchers who are interested in this field could reflect on the themes that have emerged from this study and make an informed decision on the possible transferability to their own contexts.Originality/valueBesides its contribution to existing literature, the study has also shown that for effective integration of GCE in schools, either in a national or international education system, it is necessary for a comprehensive understanding of the GCE principles. The results drawn from the study indicate that the ambiguity of the concept of GCE can result in different interpretations by school leaders, teachers and students, thus affecting its enactment in schools. In order to better understand and apply GCE, an effective conceptual model would provide a critical understanding of the multi-faceted nature of global citizenship education. A critical GCE requires schools to reflect on the entire curriculum, ensuring a seamless integration of GCE into curricula and practices.