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National Center for Education Statistics, 2011
The National Assessment of Educational Progress (NAEP) in science was updated in 2009 to keep the content current with key developments in science, curriculum standards, assessments, and research. Because of the recent changes to the assessment, the results from 2009 cannot be compared to those from previous assessment years; however, they provide…
Descriptors: Grades (Scholastic), Science Tests, Grade 8, Grade 4

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