This paper discusses the complex and competing language ideologies that Korean educational migrant families in Singapore hold about the normativity and legitimacy of English language varieties. During their educational migration in Singapore, Korean families show ambivalent attitudes toward the local variety of English in Singapore, Singlish. Through an analysis of this ambivalence, this paper explores how polycentricity and mobility work to shape the families' complex ideologies about English. It is shown that their orientations to multiple markets of English become crucial in their evaluation of different linguistic varieties in transnational space. Though the hegemonic linguistic order which privileges globally valued varieties of English (i.e. English varieties of the Inner Circle) dominates the linguistic investment strategies of these families, their language ideologies are not predetermined or fixed but continuously negotiated, contested, and reshaped by their everyday sociocultural experience and future trajectories.