The National Assessment of Educational Progress (NAEP) is a nationwide assessment that measures the academic performance of students in the United States. It evaluates students in various subjects, including mathematics, reading, science, and writing, providing insights into educational progress over time. NAEP is often referred to as the "Nation's Report Card" because it offers a comprehensive overview of student achievement across different states and demographic groups. The assessment is conducted periodically, allowing educators and policymakers to identify trends and areas for improvement in the U.S. education system.