A look at the effort by some in East Baton Rouge Parish, La., to form a new city and school system in order to provide their children with schools better than those provided by the East Baton Rouge Parish School District. If they succeed, the new school district will be mostly affluent and white; and the students in the East Baton Rouge Parish School District will be mostly blacks from low-income families. Also: a former at-risk student who now attends an elite prep school shares her story.