Scores for 9-year-olds improved in reading and mathematics in 2025 while scores for 13-year-olds showed no significant change

About the LTT Assessment

Since the 1970s, the National Assessment of Educational Progress (NAEP) has monitored the academic performance of U.S. students with what have become known as the long-term trend (LTT) assessments. The 2025 reading and mathematics LTT assessments were administered in the winter (January to March) for age 9 and in the fall (October to December) for age 13 in the 2024–2025 school year. Results in this report are based on the performance of nationally representative samples of 9- and 13-year-old students attending public and private schools.

The NAEP long-term trend assessments in reading and mathematics are distinct from the main NAEP assessments, which date back to the early 1990s. The existence of two national assessment programs—LTT and main NAEP—makes it possible to meet two major objectives: (1) to measure student progress over an extended period of time (LTT) and (2) to measure student knowledge and skills based on the most current curricula and standards (main NAEP). Results from the two assessments cannot be directly compared because they use different questions and have different levels of difficulty, and because LTT is sampled by age whereas main NAEP is sampled by grade. Read more about the differences between NAEP LTT and main NAEP assessments.

Figure Assessment design and administration information in the NAEP long-term trend reading and mathematics assessments: 2025

Age 9Age 13
Assessment periodJanuary to March, 2024–2025 school yearOctober to December, 2024–2025 school year
Number of students assessed in reading7,4008,200
Number of students assessed in mathematics7,6008,200
Number of schools assessed400 for reading and 410 for mathematics440 for both subjects
Cognitive testing time45 minutes
Reported resultsBased on national level student performance on a paper-based assessment
Survey questionnairesAdministered to students and to school administrators

The Story of NAEP

NAEP logo containing the text National Assessment of Educational Progress

The National Assessment of Educational Progress (NAEP) is a continuing and nationally representative measure of trends in academic achievement of U.S. elementary and secondary students in various subjects. It is the largest continuing and nationally representative assessment of what our nation's students know and can do in select subjects. It was first administered in 1969 to measure student achievement nationally. Teachers, principals, parents, policymakers, and researchers all use NAEP results to assess progress and develop ways to improve education in the United States.

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