Inequalities and disparities abound in U.S. society. Research studies reveal that across the contexts of people's lives--in the workplace, the home, churches, banking and lending, health care, criminal justice system, and schools--unevenness and disparities exist across racial, gender, sexual orientation, language background, ability, and nationality lines. Yet, for many Americans, the sociopolitical realities that negatively influence quality of life and public health are unseen. Understanding where inequities and disparities exist, how to address them, and working to eliminate them are the goals of a social justice approach to service delivery. In this article, the authors discuss how school psychologists have a responsibility to act as advocates for social justice. They explain the processes and strategies involved in school psychology advocacy work.