Social-emotional learning (SEL) skills have been shown to positively impact students’ classroom performance and college and career readiness, and a 2016 survey found that most teachers now favor SEL over other non-academic measures of student learning. Formal assessment of SEL outcomes enable districts to measure and increase students’ SEL skills and sends an important message to students, teachers, and the school community that non-academic outcomes are a priority. However, measuring SEL is challenging, as it is an emerging field and can be defined in many ways.