The present dissertation brings together research on heritage language acquisition and bilingual education and makes inroads into the limited research on heritage language development in school-aged bilingual children. This study explores how bilingual education, patterns of exposure, and lexical frequency shape adolescent Spanish heritage…

The use of English to teach content subjects has been a growing trend in many parts of the world. It is labelled in a variety of ways, such as content-based learning, content and language integrated learning, immersion education, theme-based language teaching, and bilingual education, but it is referred to in this paper as English-medium…

This study examined (a) the identification of various reading groups across languages in Chinese (L1) adolescents learning English as a second language (ESL), in terms of their word-reading and reading comprehension skills, (b) overlap in reading group membership across languages, and (c) the performance of the various reading groups on…

Research focused on learning mathematics in a 2nd language is generally located in individual 2nd-language contexts. In this ethnographic study, I investigated mathematics learning in 4 different second-language contexts: a mainstream classroom, a sheltered classroom for Indigenous students, a welcome class for new immigrants, and a…

Whilst the links between learner corpus research (LCR) and Second Language Acquisition (SLA) have long been debated, McEnery et al. (2019. "Corpus Linguistics, Learner Corpora, and SLA: Employing Technology to Analyze Language Use." Annual Review of Applied Linguistics 39: 74-92. doi:10.1017/S0267190519000096) claim that learner corpus…

As the popularity of two-way immersion (TWI) programs increases across the U.S., recent scholarship has drawn attention to inequities in who benefits from these programs and how they are implemented. These findings have drawn the field's attention to the instrumental part played by particular stakeholders in TWI program implementation. While this…

We focus here on the obstacles students face when learning to read in their second language, specifically in contexts where the second language is taught as a school subject or used as a medium of instruction (immersion). Qualitative studies in these areas have highlighted strategy deployment and approaches to constructing meaning as key variables…

This article reports on a study that investigated achievement in math of third and fourth grade dual language immersion (DLI) students, building on research that has demonstrated the academic achievement of students who receive content instruction predominantly in the target language. Our study expands the scope and methodology of prior research…

The purpose of this review is to provide a comparison of reading outcomes of the two most popular bilingual programs in the United States: Transitional Bilingual Education and Two-way Bilingual programs. To provide context, we present a theoretical framework and a brief historical perspective on how these programs came to gain popularity. We…

Language immersion programs are becoming more available as a form of school choice in both private and public education in the United States and beyond. While there is research on the benefits of immersion education regarding overall intelligence, there is still much skepticism as to why parents would place their child in an immersion program vs.…

This article recounts three studies that portray an evolution from research examining the effects of researcher-designed instructional interventions to research examining the impact of helping teachers to design their own instructional interventions. Study 1 investigated the effects of an instructional treatment designed by the research team on…

Schools in Ireland vary in how they introduce reading in the two official languages, Irish and English. There is particular variability within immersion (Irish medium) schools. Some introduce Irish reading first (IRF) and others English reading first (ERF). This study compared the development of Irish and English skills in children attending…

We describe research results and lessons learned from a laboratory/ classroom collaboration with a school system offering both traditional English-only education and a dual-language track (Spanish/English). Through this collaboration, we addressed basic research questions informing malleable factors that impact cognitive development. In a…

This study considers the opinions of dual immersion elementary school principals in investigating the following research questions: (1) What do dual immersion principals identify as the skills and traits for the school leader that lead to the principal's success in a dual immersion context? and (2) What were the differences of opinion, if any,…

This report summarizes existing evidence on the impact of mixed language classroom instruction, providing a summary of 2017 Austin Independent School District elementary students' performance on the state's reading test.