As kids across the country head back to school, many will be entering classrooms that are more racially segregated than they were in the 1970s. In San Francisco, nearly one-fourth of the city's public schools are racially isolated. We'll talk about what this means for student achievement and how today's schools came to be so racially divided. How important is diversity when selecting a school? Should school districts make diversifying schools a priority?

• More: The Problem We All Live With (This American Life episode featuring Nikole Hannah-Jones) - mentioned on air
• More: As Parents Get More Choice, SF Schools Resegregate (SFPublicPress.org) - mentioned on air