NAEP 2009 Snapshot-Where to find information for S.C.

The National Assessment of Educational Progress (NAEP) is the largest nationally representative and continuing assessment of what America's students know and can do in various subject areas. Assessments are conducted periodically in mathematics, reading, science, writing, the arts, civics, economics, geography, and U.S. history.
Since NAEP assessments are administered uniformly using the same sets of test booklets across the nation, NAEP results serve as a common metric for all states and selected urban districts. The assessment stays essentially the same from year to year, with only carefully documented changes. This permits NAEP to provide a clear picture of student academic progress over time.
South Carolina Reading Snapshot: 33% Below Basic, 34% Basic, 24% Proficient, and 7% Advanced.  
The average score for students in South Carolina in 2009 (216) was not significantly different from their average score in 2007. 
South Carolina Mathematics Snapshot: 22% Below Basic, 44% Basic, 29% Proficient, and 5% Advanced. 

The average score for students in South Carolina in 2009 (236) was not significantly different from their average score in 2007.

You can find sample test items for the grades/subjects tested on the Website.