Higher education institutions in the United States with graduate-level educational leadership programs traditionally do not offer professional learning opportunities in integrative STEM education. The objective of this paper is to share our journey to prepare and implement a course designed for P-12 educational leaders to build knowledge and skills to lead impactful integrative STEM programming. Results of the demand survey indicated a high amount of interest in an integrative STEM education course. Findings from interviews and the modified Delphi study informed our decisions for the development, objectives, assessments, and outcomes of the course to enhance integrative STEM culture in educational settings.