When he entered the building, the buzz of speculations quickly traveled throughout the halls. Where did he come from? What is wrong with him? What grade is he in? Who is has the lowest number? As everyone secretly hopes the new student deemed a "challenge" won't be placed in their classroom, the tall, thin shadow shuffles past your room…

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…