The COVID-19 global pandemic significantly impacted both the academic and social and emotional development of middle school students. This article describes the benefits of implementing an interdisciplinary, project-based summer school program to support middle school students as they adapted to in-person learning after school closures due to the global pandemic. Findings show that participation in the summer program contributed to students' engagement and interest in science and engineering activities and their social-emotional growth through peer collaboration and relational mentor support.