The objective of this research is to analyse the construction of identities and the positionings of Brazilian and English teachers in a bilingual school in Rio de Janeiro, during the implementation of a curriculum with an international perspective. Based on a sociocultural and interactional approach, this research attempts to articulate the discussion about in-betweeness, hibridity and transdifference in an intercultural context, including the positioning theory, studies of face and politeness along with studies about indexicality, accounts and metaphors contributing to the construction of in-between places. The methodology of this research is based on qualitative and interpretative approaches, following the etnomethodology for interviews. The data analysis focuses on the (re)configuration of professional identities; the construction of sociocultural identities and the positionings towards the new international curriculum. The results highlight the use of accounts, as well as metaphors, in the construction of Brazilian and English identities in relation to their selves and that of others as well as to the debate about internationalism. With regards to the internationalism debate, the English teachers are more inclined to assume that this discussion tends to legitimate the local culture, whilst the Brazilian teachers take a more dubious perspective, torn between the recognition of the local culture and embracing the international view. The research aspires to contribute to the discussion of the existence of a third-place in relation to interculturalism as a result of the implementation of a new curriculum in an international school.