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Research has consistently linked social-emotional skills to important educational and life outcomes. Many children begin their school careers, however, without the requisite social and emotional skills that facilitate learning, which has prompted schools nationwide to adopt specific curricula to teach students the social-emotional skills that enable them to maintain optimal engagement in the learning process. Second Step® is one of the most widely disseminated social-emotional learning (SEL) programs; however, its newly revised version has never been empirically evaluated. The purpose of this study was to conduct a randomized controlled trial investigating the impact of the 4th Edition Second Step® on social-behavioral outcomes over a 1-year period when combined with a brief training on proactive classroom management. Participants were kindergarten to 2nd grade students in 61 schools (321 teachers, 7300 students) across six school districts. Hierarchical models (time×condition) suggest that the program had few main effects from teacher-reported social and behavioral indices, with small effect sizes. The majority of significant findings were moderated effects, with 8 out of 11 outcome variables indicating the intervention-produced significant improvements in social-emotional competence and behavior for children who started the school year with skill deficits relative to their peers. All the significant findings were based on teacher-report data highlighting a need for replication using other informants and sources of data. Findings provide program validation and have implications for understanding the reach of SEL programs.

This study examined the impact of a commonly adopted elementary universal social-emotional learning program, Second Step, on student social-emotional and academic outcomes following 2 years of implementation. The cluster-randomized wait-list control trial included 61 schools, 321 teachers, and 8,941 early elementary students across 2 states, with assessments collected in the fall and spring across 2 years. We developed 8 theoretically derived growth patterns that potentially described the intervention and counterfactual conditions, and then selected the model with the greatest support from the data for each outcome with an information-theoretic approach. Differences between intervention and control groups were tested within the best-fitting model in order to reduce misspecification and maximize generalizability. Most measures fit a pattern in which students improved only during instructional time in school and not during the summer; the data rarely fit the commonly assumed linear growth model. Improvements related to Second Step were observed for emotional symptoms, hyperactivity, skills for learning, and emotion management, but these were modified by either pretest levels or student sex. Condition effects for peer problems were larger for students with initially low ratings and for boys. Boys also showed improvements in conduct problems. Study impacts generally did not depend upon student grade level. The results confirmed the importance of identifying developmentally sensitive trajectories and suggested important implications for Second Step implementation in early elementary grades.

With the increased number of schools adopting social-emotional learning (SEL) programming, there is increased emphasis on the role of implementation in obtaining desired outcomes. Despite this, the current knowledge of the active ingredients of SEL programming is lacking, and there is a need to move from a focus on "whether" implementation matters to "what" aspects of implementation matter. To address this gap, the current study utilizes a latent class approach with data from year 1 of a randomized controlled trial of Second Step® (61 schools, 321 teachers, over 7300 students). Latent classes of implementation were identified, then used to predict student outcomes. Teachers reported on multiple dimensions of implementation (adherence, dosage, competency), as well as student outcomes. Observational data were also used to assess classroom behavior (academic engagement and disruptive behavior). Results suggest that a three-class model fits the data best, labeled as high-quality, low-engagement, and low-adherence classes. Only the low-engagement class showed significant associations with poorer outcomes, when compared to the high-quality class (not the low-adherence class). Findings are discussed in terms of implications for program development and implementation science more broadly.

With the increased number of schools adopting social-emotional learning (SEL) programming, there is increased emphasis on the role of implementation in obtaining desired outcomes. Despite this, the current knowledge of the active ingredients of SEL programming is lacking, and there is a need to move from a focus on "whether" implementation matters to "what" aspects of implementation matter. To address this gap, the current study utilizes a latent class approach with data from year 1 of a randomized controlled trial of Second Step® (61 schools, 321 teachers, over 7300 students). Latent classes of implementation were identified, then used to predict student outcomes. Teachers reported on multiple dimensions of implementation (adherence, dosage, competency), as well as student outcomes. Observational data were also used to assess classroom behavior (academic engagement and disruptive behavior). Results suggest that a three-class model fits the data best, labeled as high-quality, low-engagement, and low-adherence classes. Only the low-engagement class showed significant associations with poorer outcomes, when compared to the high-quality class (not the low-adherence class). Findings are discussed in terms of implications for program development and implementation science more broadly.