This report presents the results of the National Assessment of Educational Progress (NAEP) long-term trend assessments in reading and mathematics administered during the 2019–20 school year to 9- and 13-year-old students. Long-term trend assessments were first administered in the early 1970s; results are available for 13 reading assessments dating back to 1971 and 12 mathematics assessments dating back to 1973. This report provides trend results in terms of average scale scores, selected percentiles, and five performance levels. Item maps for each age group illustrate skills demonstrated by students when responding to assessment questions. Scale score results are included for students by selected background characteristics (e.g., race/ethnicity, gender, and grade attended). Overall, the 2020 average scores in reading and mathematics for 13-year-olds were higher than the earliest assessments but declined since 2012. Scores for the lowest-performing students (at the 10th percentile) decreased from 2012 at both ages and subjects.
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