This article shows that an ethnically diverse student population leads to blurred ethnic and racial boundaries in high schools. Still, students in New York distinguish themselves much more along ethnic and racial lines than do London students. The evidence presented suggests that, in addition to national-level differences, traditional British…

Seemingly endless tinkering and adjustment of the structure of education in the United States over the past century have led to the adoption of different school forms (grouping particular grades into separate schools) at different times. These different school forms necessitate transitions between schools (e.g., from a middle school to a high…