Since the 1990s, there has been a resurgence of interest in single-sex education across the United States, and many public schools have created all-boys and all-girls classes for students in grades K through 12. The Separation Solution? provides an in-depth analysis of controversies sparked by recent efforts to separate boys and girls at school. Reviewing evidence from research studies, court cases, and hundreds of news media reports on local single-sex initiatives, Juliet Williams offers fresh insight into popular conceptions of the nature and significance of gender differences in education and beyond.