The rising demand for dual-language immersion (DLI) programs, which offer core instruction in two languages from early grades onward, has raised questions about program design and access. We leverage the rapid expansion of DLI schools across the U.S. state of Utah to estimate effects of DLI program availability on the academic achievement of…

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…

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…

Using the 2.4-million-word written Spanish subsection of the Corpus of Utah Dual Language Immersion, collected from a large-scale standardized writing assessment of K-12 Spanish second language (L2) students, this study focuses on lexical complexity as operationalized by three measures: lexical diversity, lexical density, and lexical…

The academic success and language proficiency in Arabic of bilingual Arabic learners (BAL) in immersion programs have been limited by a lack of effective policies and practices that address the Arabic population's inclusive and equitable educational environment. This qualitative case study aims to provide insight into how academic leaders can…

This three-article dissertation examined how policy choices in three key policy areas -- initial enrollment, service provision, and reclassification -- impact English learner (EL)-classified students. The first article examined the national landscape of state statutes, regulations, and state education agencies' (SEA) guidance that support…

Assessment "as," "for," and "of" learning complement effective curricular and instructional practices, however, the complexities of assessment for multilingual students are too-often overlooked and misunderstood. What if multilingual learners, teachers, and educational leaders all had opportunities to plan for and use…

To keep the United States economically competitive in a rapidly changing world, business leaders are calling for employment candidates who can work efficiently in a globalized context with both language skills and cross-cultural dispositions critical to the economic success of the country. These language proficiency skills and cross-cultural…

This study assesses the long-term linguistic and academic outcomes associated with different bilingual language education models for low-income dual language learners (DLLs) residing in a bilingual, bicultural context. As part of the Miami School Readiness Project (MSRP), we analyzed the impact of program model on gains in English language…

This current study suggests that future secondary Spanish language teachers must be more like athletic coaches to ensure student success and score a so-called win in the classroom. Teachers must retool and redesign outdated and ineffectual curricula and instructional strategies to improve student performance. Focusing on language proficiency,…

The assessment of dual language immersion (DLI) students' proficiency in the partner language plays a key role in program evaluation. This article reports findings from a large-scale study, drawing on cross-sectional assessment data from 73 schools and longitudinal data from 25 schools. Students were tested in the interpretive (listening and…

"Culturally and Linguistically Responsive Education" provides a much-needed blueprint for how school leaders can leverage the power of collaborative learning to create more culturally and linguistically responsive schools. The book describes an innovative network of twenty preK-8 schools located across the United States striving to…

In this study, we examined the bilingual language development among Korean American first-graders in two southern California cities and explored the opportunities for language use available to them in various spaces: at school (one dual language immersion school and one traditional English-only public school), at home, and in the community. Data…

This paper first considers what it means to become truly proficient in a language other than the native one. It then looks briefly at the evolution of dual language programs. Next, it focuses on the issue of whether the first language (L1) or the second language (L2) serves as the language of mediation. Other dual language program issues are then…

This study examines the bilingual education in Spain and in Canada, and discusses their historical backgrounds, current bilingual education programs in use, and teacher proficiency within their bilingual education programs. The purpose of this study is to examine these two countries' bilingual education programs and find a way to implement a…