# The estimate rounds to zero.
* Average scores are significantly different from large central city public schools.
** Average scores are significantly different from the nation (public schools).
NOTE: Race categories exclude Hispanic origin. The NAEP science scale ranges from 0 to 300. Detail may not sum to totals because of rounding. The shaded bars are graphed using unrounded numbers. View complete data with standard errors for scale scores in districts and the nation or in large central cities, and achievement levels in districts and the nation or in large central cities.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2005 Trial Urban District Science Assessment.

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