Dissimilarity is the evenness with which one racial population group is located (or segregated) within a metro area, with respect to another racial group. The dissimilarity statistic is interpreted as the proportion of one racial group that would need to relocate to another school in order for the racial composition of each school to mirror the racial composition of all students in the metro area as a whole. A value of 0% represents complete integration and a value of 100% represents complete segregation.
Primary schools defined as those with lowest grade of "Pre-K" through 3 and highest grade of "Pre-K" through 8. Indices in metro areas with small numbers of specified racial/ethnic groups should be used with caution. Data for 1999-2001 geocoded from zip codes to metropolitan areas. Excludes metro areas in which 10% or more of students attended schools for which race/ethnicity data was not reported.
Pre-K students not included for metros in the following states in the
specified years: 1999-2000: AL, CA, KY, WY. 2000-2001: AL, CA, KY,
WY, TN. 2007-2008: CA, MI, SD. 2010-2011: CA, OR, MI.
Data for multi-racial students only collected for all states
as of 2010-2011.
National Center for Education Statistics, Common Core of Data. Public Elementary/Secondary School Universe Survey.