Learn how Boston After School & Beyond and the Providence After School Alliance use targeted professional development to support collaborative teaching between STEM-focused community educators and middle school teachers within their summer learning programs. Bridging the gap between formal and informal education, both programs focus on integrating Next Generation Science Standards' science & engineering practices in order to promote overall program quality and social-emotional learning outcomes. Participants will gain a deeper understanding of the benefits and challenges of this model, explore strategies for optimizing results, and have an opportunity to ask participating educators about their experiences.