The authors evaluated the effects of P-SELL, a science curricular and professional development intervention for fifth-grade students with a focus on English language learners (ELLs). Using a randomized controlled trial design with 33 treatment and 33 control schools across three school districts in one state, we found significant and meaningfully…

We conducted a randomized field trial to test an academic vocabulary intervention designed to bolster the language and literacy skills of linguistically diverse sixth-grade students (N = 2,082; n = 1,469 from a home where English is not the primary language), many demonstrating low achievement, enrolled in 14 urban middle schools. The 20-week…

Using longitudinal data on a nationally representative U.S. cohort, this study examined the roles of language minority (LM) status and English proficiency in English reading growth across the elementary and middle school years. Piecewise growth modeling was used to compare English reading growth trajectories for native English speakers and LM…

This study explores the nature of reading comprehension difficulties among early adolescent language minority (LM) learners and native English speakers in urban schools. Sixth-grade students (399 LM learners, 182 native English speakers) were screened for difficulties, using a standardized measure of reading comprehension. Of these, 262 students…