The National Assessment of Educational Progress (NAEP) is the only ongoing, nationally representative measure of what the nation's students know and can do in various subject areas. Since 1969, NAEP has provided valuable information on student achievement to policymakers, educators, and the general public. NAEP assessment results, often referred to as The Nation's Report Card, provide a clear picture of student academic progress over time and help decision makers to implement policies and programs that serve the needs of the nation's students.
Because so much is at stake, NAEP requires the highest levels of consistency and accuracy in its data collection activities. NAEP ensures the reliability and comparability of results across the nation by stressing the following: