If State A reports that 70 percent of its students in the NAEP sample of schools meet the state's standard for Proficient and if 70 percent of the students in the NAEP samples score higher than 241 on the NAEP scale, then 241 is the NAEP scale equivalent for that state’s standard.

Since 2003, the National Center for Education Statistics (NCES) has compared each state's standard for proficient performance in reading and mathematics by placing the state standards onto a common scale defined by NAEP scores. This process of "state mapping" shows where each state's standards lie on the NAEP scale, providing important contributions to analysis.

More About State Mapping

• See key findings and results tables from the 2009 report.
• Download your state's State Mapping Factsheet to view more findings and results.
• View detailed information on each state's Adequate Yearly Progress (AYP) standards, assessments, and exclusion rates in A Profile of State Assessment Programs. A separate profile document is available for each state.
• More information to help you understand the report is available in the State Mapping FAQs. 
• View a table summarizing the percentage of students at or above NAEP Proficient and the percentage of students meeting state proficiency standards for 2009, 2007 or 2005.
• View the Commissioner's Statement about the results of the 2009 State Mapping study.