This article investigates the differences in academic achievement trajectories from elementary through middle school among English Learner (EL) students in four different instructional programs: English Immersion (EI), Transitional Bilingual (TB), Developmental Bilingual (DB), and Dual Immersion (DI). Comparing students with the same parental…

This paper investigates the differences in academic achievement trajectories from elementary through middle school among English Learner students in four different instructional programs: English Immersion, Transitional Bilingual, Developmental Bilingual, and Dual Immersion programs. Comparing students with the same parental preferences but who…

This study estimates program effects (English immersion versus primary language instruction using varying degrees of Spanish) upon English and Spanish word identification in the context of changing classrooms (cross-classification) from kindergarten through second grade. Letter-word identification is an important predictor of early reading…

The purpose of this study was to analyze the effects of a two-way immersion elementary school program on academic achievement at the end of the elementary school and the end of the first year of junior high school. Longitudinal high stakes test data in reading, writing, and mathematics were collected on native English speakers and native Spanish…

The fourth phase of a longitudinal study focusing on the cognitive and language development of children in a primary-grade Spanish immersion program (SIP) is reported. Subjects were the remaining 13 members of an SIP cohort beginning in 1987, 15 members of a standard program comparison classroom, 18 members of another class in the 1987 SIP cohort,…

Results of a National Research Council review of two major bilingual education studies are presented. The two studies were a national longitudinal study of the effectiveness of instruction of limited-English-proficient students and a study comparing three bilingual education program types (immersion, early exit, and late exit). The report contains…

The evolution and evaluation of an elementary level structured immersion program in English as a second language are described. The program provides all academic instruction in English, but at a level that students can understand. It is ungraded, uses bilingual teachers who speak the students' native language, and has both developmental and direct…

A study evaluated two El Paso, Texas bilingual education program types, including a state-mandated transitional model (n=18 schools, 5,607 students) and a bilingual immersion program (n=19 schools, 4,717 students). Both programs are designed so students will exit after grade 4, but some continue in grades 5 and 6. Student characteristics are…

There are many untested, long-held assumptions within the field of study abroad concerning the impact of program elements such as study duration, language of instruction, program models, and student housing choices. One assumption embraced within the field is that direct enrollment (or full immersion) programs are more effective at achieving a…

A study assessed and compared the effectiveness of two distinct approaches of bilingual education used within a single school district in El Paso (Texas). The program designs, one a traditional transitional bilingual and the other a bilingual immersion, were implemented under similar conditions of resources, school year length, class size, and…

A study of a two-way bilingual program in the Port Chester, NY Public Schools examined the relationship between classroom environment, and the language proficiency levels and second language learning outcomes of bilingual and monolingual pupils participating in the program. Pupils were second- through fifth-graders, including…

The results of a longitudinal evaluation of an innovative educational program in bilingual immersion at the San Diego City Schools are presented. The program's goals emphasized the acquisition of communicative proficiency, in English and Spanish, for both native-English-speaking and native-Spanish-speaking students. Using a quasi-experimental…

The Development of Bilingual Proficiency is a large-scale, five-year research project begun in 1981. The final report contains three volumes, each concentrating on specific issues investigated in the research: (1) the nature of language proficiency, including second language lexical proficiency and the development and growth of metaphor…