* NAEP main assessment. Percentages for each year may not sum to 100 due to rounding.
** Accommodations not permitted in this year.
Source: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP). Data accessed via the NAEP Data Explorer at https://nces.ed.gov/nationsreportcard/about/naeptools.aspx. Data presented by the American Academy of Arts and Sciences’ Humanities Indicators (www.humanitiesindicators.org).