Persistent school segregation does not only mean that children of different racial and ethnic backgrounds attend different schools, but their schools are also unequal in their performance. This study documents nationally the extent of disparities in school performance between schools attended by whites and Asians compared to blacks, Hispanics, and Native Americans. It further examines the geography of school inequality in two ways. First it analyzes the segregation of students between different types of school profiles based on racial composition, poverty and metropolitan location. Second it estimates the independent effects of these and other school and school district characteristics on school performance, identifying which aspects of school segregation are the most important sources of disadvantage. A focus on schools at the bottom of the distribution as in No Schools Left Behind would not ameliorate wide disparities between groups that are found run across the whole spectrum of school performance.