"Steps to Inclusion" is a teacher-training resource specifically designed to facilitate inclusive physical education. Teacher-training resources, such as "Steps to Inclusion," can only be effective when systematic and effective adoption is achieved. The diffusion of innovations theory (DOI) provides a useful framework to contextualize and understand factors related to teachers' adoption of various teacher-training resources. Guided by the DOI, this study identified factors that teachers perceived to be important in facilitating resource adoption. Results indicate that improved adoption of resources could be achieved by: (1) communicating/promoting resources to key educational leaders; and (2) providing curated content. Additional practical implications and future directions are discussed.