This article discusses how higher education and K-12 public schools are tightly interconnected and interdependent when it comes to addressing issues of diversity and equity amid rapid demographic changes. The approaches, strategies, and emphases in addressing issues of diversity differ across K-12 and higher education. Higher education has been more successful in its legal defense of the educational benefits of diversity, enabling universities to maintain many affirmative action policies that foster demographic diversity. Many K-12 educators have applied learning theory to address the "sociocultural factors" of integration, especially curricular and pedagogical approaches as well as discipline policies and procedures that affect school climate. Strategic cross-sector learning, collaboration, and growth around issues of racial, ethnic, and cultural diversity from pre-K to graduate school education are sorely needed.