Many educators and policy makers look to two-way dual language immersion as one of the most promising options to close achievement gaps for English learners. However, the programs' effectiveness depends on the quality of their implementation. This article reports on a large-scale study of the implementation of dual language immersion across a…

The potential of TWI to close the achievement gap for English language learners and to provide both native English speakers and native partner-language speakers with access to a high-quality education with positive academic, language, and sociocultural outcomes is clear. In this article, I argue that the realization of this potential for TWI…

This article provides an in-depth exploration of the language ecologies of two classrooms attempting to implement a two-way dual language (TWDL) program and its mediating conditions. Drawing on ethnographic methods and a sociocultural understanding of language, we examined both teachers' and students' language ideologies and language practices,…