The Chronicle has a big series on racial integration and racial isolation in San Francisco public schools. The articles are all online here at:
There are a number of articles: One, titled "Can Separate Ever Be Equal?" focuses on two racially isolated schools: Jean Parker (mostly Asian) and Charles Drew (mostly African-American); there's also an article about one of the district's most diverse schools (Lakeshore). Another article compares Cleveland Elementary (a racially isolated school, mostly Latino working-class students) and Clarendon Elementary (33% Asian, 31% White, 11% Latino and 6% African-American students, which roughly mirrors the ethnic demographics of the city). An article titled "Turning Around a Struggling School" focuses on Peabody Elementary in the Richmond, which went from underenrolled ten years ago to a highly sought after school today (50% White, 50% mix of other ethnicities). And another piece looks at efforts other cities have made towards desegregation.
There's also a graphic showing every elementary school's racial/ethnic mix: