Diversity In Public Schools

The diversity of our classroom is no more than what I would expect from a public school in the middle of a diverse area of California. The vast majority of people who like to separate themselves from other "groups" of various categories, however, do surprise me. From what I know, I would think that the people in a public school would want to fit in with others more than they would want to separate and isolate themselves from groups. Although, I am one of those people who were separated by choice, it still amazes me that people would do that, as oppose to sticking with a group and fitting in. This activity wasn't about fitting in or being popular, but in everyone's minds, I think there was some sort of independence wanted from groups of people,