Dual Language Programs Intervention Report

Title:	Dual Language Programs Intervention Report
Description:	This What Works Clearinghouse (WWC) intervention report summarizes the research on dual language programs. Dual language programs can help native English speakers develop proficiency in a second language and English learners develop proficiency in both their native language and English. Typically, in dual language programs, classroom teachers instruct students from an early age and over multiple years in both English and a second language called the partner language. These programs vary widely by partner language, primary language of the student population, and duration. Most of the studies examined do not meet WWC standards. Based on the two studies that meet WWC standards, the WWC found moderate evidence that dual language programs positively impacted student literacy achievement in English compared with instructional programs in English only. The WWC found uncertain effects on science and mathematics achievement. More high-quality research is needed to understand the effects of dual language programs in varied contexts.
Online Availability:	Download, view and print the report as a pdf file. (299KB) Download, view and print the report brief as a pdf file. (183KB)
Cover Date:	December 2022
Web Release:	December 29, 2022
Print Release:	December 29, 2022
Publication #:	WWC 2023001 General Ordering Information
Center/Program:	WWC
Authors:	WWC
Type of Product:	Intervention Report
Keywords:	English Language Learners (ELL) English Language Proficiency Foreign Languages Language Proficiency
Questions:	For questions about the content of this Intervention Report, please contact: Betsy Wolf.