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…

This dissertation focused on comparing the academic achievement and language proficiency in both English and Spanish of students at risk for language and learning difficulties, with bilingual typically developing students in two bilingual educational contexts: English as a Second Language program and Spanish two-way immersion program. Data was…

This research uses a descriptive quantitative statistical design to examine campus-level results from the State of Texas Assessments of Academic Readiness (STAAR). The focus is on describing the achievement disparities between campuses that implemented Transitional Bilingual Education (TBE) programs and those implementing Dual Language (DL)…

Success in mathematics contributes to children's future career and lifelong financial security. There have been reports that dual-language education conveys academic advantages in mathematics achievement, although there is debate. This study aimed to investigate whether dual-language education benefits children's mathematics achievement and…

Despite the increasing popularity of dual language education programs in Taiwan, limited research assesses their effectiveness. This study evaluated eight English Immersion Programs (EIPs) in Taiwan, representing a dual language education model, using the "Guiding Principles for Dual Language Education" (GPDLE) framework. Interviews with…

This study explored the development of oral narrative retell proficiency among Mandarin Chinese-English dual language immersion (DLI) learners in Utah. The study compared the younger and the older DLI learners' oral narrative retelling production in order to provide information regarding the Mandarin narrative developmental trend of the DLI…

The present study examined the effect of children's enrollment in U.S. dual-language immersion (DLI) programs in first grade on English development across five years, using the Early Childhood Longitudinal Study, Kindergarten Class of 2011 (ECLS-K:2011) database. Propensity score matching was used to create comparable groups of DLI and non-DLI…

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…

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 study investigates second language acquisition of learners enrolled in a dual language/two-way bilingual immersion program. Two groups of third-grade students participated in this study. The first group was composed of Spanish-dominant participants learning English, and the second group was composed of English-dominant students learning…

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.

In this investigation, the relationship between bilingual education program type (i.e., dual language programs or exit programs) and English Language Learner reading and mathematics test scores was examined. Data were obtained on English Language Learners who were enrolled in Grades 3, 4, 5, and 6 in Texas public schools for the 2008-2009,…

Considerable research documents students' outcomes in dual language (DL) programs, but there is little examination of students' perceptions of bilingualism and its impact on students' cognitive functioning and social relationships, especially with comparative studies across different target languages and student backgrounds. This study, which…