This report argues that political leaders should pay more attention to the evidence, intuition, and common sense that supports the importance of racially and ethnically diverse educational settings to prepare the next generation. It highlights in particular the large body of research that demonstrates the important educational benefits — cognitive, social, and emotional — for all students who interact with classmates from different backgrounds, cultures, and orientations to the world. This research legitimizes the intuition of millions of Americans who recognize that, as the nation becomes more racially and ethnically complex, schools too should reflect that diversity and tap into the benefits of these more diverse schools to better educate all students for the twenty-first century.