The purpose of this preregistered cluster randomized trial was to examine the effectiveness of a universal social-emotional learning program when implemented under routine conditions in second-grade classrooms. Thirty-nine teachers and 332 students from 13 elementary schools participated in the trial. Teachers randomly assigned to the treatment…

This study evaluated the feasibility of the Knowledge, Language, and Inquiry (K.L.I.) intervention, designed to support Grades 3-5 multilingual students classified as English learners (ML-ELs) in building content knowledge, language skills, and reading comprehension through inquiry-based small-group instruction. Feasibility was examined across…