As part of the 2001 and 2006 U.S. history assessments, school principals of twelfth-grade students were asked the following question about course requirements in social studies. Below is the full text of the question and the percentage of students whose principals responded within each category (data is shown for categories where percentages rounded to a number greater than zero).

For students who will graduate this year, what is the total number of years (or Carnegie-unit equivalents) of coursework that your school or district requires in social studies? (Count only requirements for courses taken in grades 9 through 12.)

A. None
B. One-half year
C. One year
D. Two years
E. Three years
F. Four years
G. More than four years

Check for Statistical Significance

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Browse background questionnaires for the NAEP assessments.

NOTE: Detail may not sum to totals because of rounding.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2001 and 2006 U.S. History Assessments.