The Wallace Foundation's Partnerships for Social and Emotional Learning Initiative is a six-year initiative that The Wallace Foundation launched in 2017 to explore whether and how children benefit when schools and their out-of-school-time programs partner to improve social and emotional learning (SEL), as well as what it takes to do this work. SEL is "the process through which children and adults understand and manage emotions, set and achieve positive goals, feel and show empathy for others, establish and maintain positive relationships, and make responsible decisions." This case study explores how the Russell Elementary School and the Boys & Girls Clubs of Dorchester (BGCD) partnered in Boston to provide SEL enrichment off campus as part of the school day. The Russell and BGCD built a brand-new partnership centered on an innovative yet complex model of delivering SEL-infused enrichment to students off campus during the school day. The partnership weathered start-up hurdles and then a complete disruption of the model due to the pandemic but came out on the other side with a reinforced commitment to SEL. The Russell and BGCD both used the MindUp curriculum, which established how teachers and SEL instructors would teach SEL in terms of the specific language and practices used, providing a consistent SEL learning experience for students. [For "Strengthening Students' Social and Emotional Skills: Lessons from Six Case Studies of Schools and Their Out-of-School-Time Program Partners. Lessons from the Partnerships for Social and Emotional Learning Initiative. Volume 2, Part 1. Research Report. RR-A379-4," see ED623577.]