Twelfth-grade NAEP civics percentile scores
scores were not significantly different when comparing 2006 with 1998.
NOTE: Lower-performing students are represented by the 10th and 25th percentiles, while higher-performing students are represented by the 75th and 90th percentiles. View complete data with standard errors.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 1998 and 2006 Civics Assessments.