The National Center for Education Statistics (NCES) has periodically published reports using results from the National Assessment of Educational Progress (NAEP) to compare the proficiency standards that states set for their students. Since standards vary across states, the results of the various state assessments cannot be used to directly compare students' progress. However, by placing a state standard onto the NAEP scale, a common metric for all states, a NAEP equivalent score is produced, which can be compared across states. The last mapping study report released by NCES (
NCES 2019-040) compared state proficiency standards for school year 2016-17. The current report highlights the results of mapping state proficiency standards onto the NAEP scales using state assessment results from the 2018–19 school year and the 2019 NAEP assessments for public schools.
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