During the 2022-23 school year, Youth Policy Lab partnered with TRAILS (Transforming Research into Action to Improve the Lives of Students) to evaluate the implementation and impact of its Tier 1 Social and Emotional Learning (SEL) curriculum as part of a statewide expansion in two intermediate school districts in Michigan. To assess the program's effects on student outcomes related to social-emotional well-being and mental health, a one-year, school-level randomized control trial was conducted. Students and staff from approximately 40 schools gave feedback through surveys at the beginning...