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Errata Notice:

The Nation's Report Card: 
Trial Urban District Assessment Mathematics 2009 

April 2010


Information provided in the Interpreting Statistical Significance section of the Technical Notes on page 69 of the report was updated to describe more accurately the procedures for multiple comparisons.


Back to 2009 Mathematics Trial Urban District Assessment report.


Last updated 27 April 2010 (RH)

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National Center for Education Statistics - http://nces.ed.gov
U.S. Department of Education