With the majority of children in the United States attending early care and education (ECE) prior to kindergarten (National Survey of Early Care and Education, 2016), the opportunity to reach children early, and strengthen resilience in the context of everyday life, is profound. Yet, ECE teachers often lack professional supports to meet the needs of children impacted by trauma (Cummings, Addante, Swindell, & Meadan, 2017; Loomis, 2018). The Roots of Resilience program was designed to address this issue through an online course and video-based coaching. Recognizing the importance of feasibility and of balancing rigor with relevance to create wide-spread change (Glasgow & Chambers, 2012), this preliminary study of Roots of Resilience focuses on feasibility and examines teachers' learning and application of practices consistent with trauma-responsive care. Seventeen ECE teachers from family child care homes, centers, and Head Start programs participated. The majority (69%) had less than a Bachelor's-level education. Qualitative and quantitative data sources included teacher surveys, quizzes, discussion board entries, workbook entries, coach ratings, and observations. Findings indicate that the program is feasible for ECE teachers and offer preliminary evidence that it may help teachers strengthen their knowledge and application of practices to identify and respond to children's needs. An iterative development process and a strengths-based approach were identified as critical program attributes. [This paper was published in "Children and Youth Services Review" Dec 2019.]