The Selected Proceedings of the 2017 Second Language Research Forum, edited by Hope Wilson, Nicole King, Eun Jeong Park, and Kirby Childress, has just been published. I have a chapter therein, ‘Engaged Second Language Research: Studying Stakeholders’ Perspectives on Preschool DLLs’ Science and Language Learning’, co-authored with Brian Seilstad, Jackie Ridley, and Somin Kim. We provide an overview of the Expanding Repertoires project, framing it as an example of engaged L2 research. We focus on the exploratory study in Central Ohio, which examined the perspectives and experiences of informal science and ECE educators and the various bi/multilingual families they serve across contexts.