The critical importance of second language (L2) input, output, and interaction in TESOL notwithstanding, the decision between immersive (L2-English only) versus nonimmersive approaches is considered "the most fundamental question facing second language acquisition (SLA) researchers, language teachers, and policymakers" (Macaro, 2014, p.…

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…

The current study examines English-speaking learners of Spanish and their pragmatic development of request forms during a six-week immersion program in Madrid, Spain. Elicited production and intuition data were analyzed, focusing on personal deictic orientation, directness evidenced by clause type, and the use of "por favor"…

In this study, we present quantitative findings on the effects of English-Spanish dual language immersion on student achievement in science and mathematics in grades 3, 4, and 5. The research aims to present empirical evidence documenting the impact of dual language immersion, reveal analytical techniques utilizing nonparametric measure of similar…

This paper reports on part of an evaluation of a 2-year program providing preparatory support for 430 Cantonese Chinese-native-speaking students switching from Chinese to English-medium instruction late in their secondary schooling, mainly because of aspiration to English-medium tertiary study. Focusing quantitatively and qualitatively on…

Using a low-inference observational instrument, the authors empirically described and compared pedagogical behaviors in bilingual and structured English-immersion programs serving Spanish-speaking English language learners in a large urban school district in Southeast Texas. The two programs included both intervention/control of each type during…

The authors examined the effectiveness of a 2-year (kindergarten and first grade) oral English intervention provided to 534 Hispanic English-language learners in transitional bilingual education (TBE) and structured English immersion (SEI) programs. Using latent growth modeling, the authors compared instructional programs in relation to growth…

The purpose of this study was to examine the effect of a supplemental peer-mediated reading program on reading achievement of first graders (N = 76) in a two-way bilingual immersion (TWBI) program. Nearly 80% of students were Hispanic; of these, 24 were identified as English language learners (ELLs). Classrooms were randomly assigned to…

The authors conducted an experiment during the 2003-2004 school year to determine whether "On Our Way to English" ("OWE"), a product to help elementary students learn to read and speak English, was more effective in a California and a Texas school district than materials already in place. In the California study, 384 English…

The authors were asked to find out whether "On Our Way to English" ("OWE"), a supplementary, text-based product to help elementary school students learn to read and speak English was more effective in a California and a Texas school district than the materials the districts already had in place. They conducted an experiment…