The purpose of this cluster randomized group study was to investigate the effect of multitiered, dual-language instruction on children's oral language skills, including vocabulary, narrative retell, receptive and expressive language, and listening comprehension. The participants were 3- to 5-year-old children (n = 81) who were learning English and…

This article reports the outcomes of a multiyear study comparing the English and Spanish language and reading performance of Spanish-dominant children randomly assigned, beginning in kindergarten, to transitional bilingual education (TBE) or structured English immersion (SEI) for periods of up to 5 years. On the Peabody Picture Vocabulary Test and…

To help improve research-based knowledge of effective instruction for low-literate ESL (English as a second language) learners, the National Center for Education Evaluation and Regional Assistance of ED's (U.S. Department of Education's) Institute of Education Sciences contracted with the American Institutes of Research (AIR) to conduct a Study of…

This paper reports the fifth-year results of a study comparing the English and Spanish language and reading performance of Spanish-dominant children randomly assigned beginning in kindergarten to Transitional Bilingual Education (TBE) or Structured English Immersion (SEI). This is the first randomized study to compare TBE and SEI reading…

Examined effects of instructional components for studying literature on limited-English-proficient and English-proficient students, part of an ongoing program to estimate effects of several individual components of a Spanish-to-English language-arts transition program. Found that combined effects of literature logs and instructional conversations…