ABSTRACT Systemic change is regarded as a key component of professional school counseling practice for increasing positive, equitable outcomes for PreK-12 students. Although related constructs like leadership and advocacy have been thoughtfully explored, systemic change requires consultation and collaboration with educational and community partners. To date, there has been a lack of clarity around how systemic change looks in practice for school counselors. The purpose of this study was to explore the foundational components of systemic change in school counseling. Using Delphi methodology, an expert panel of 22 participants consisting of professional school counselors, counselor educators, and school counseling supervisors developed a consensus list of 130 items describing the core beliefs, knowledge, dispositions, and skills necessary for school counselors to conduct systemic change. The findings suggest future implications for school counseling research, preparation, and consultation.