2011 | ABRIDGED
MATHEMATICS FRAMEWORK
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12
Reporting NAEP Results
The 2011 NAEP Mathematics Assessment results
are based on nationally representative samples of
209,000 fourth graders from 8,500 schools and
175,200 eighth graders from 7,610 schools. Scores
are not reported at the individual level. Because the
elementary schools participating in NAEP are more
likely to exercise the option of including all of
their fourth-grade students in the sample, the
number of students assessed at grade 4 is larger
than grade 8.
Results for the nation refect the performance of
students attending public schools, private schools,
Bureau of Indian Education schools, and Department
of Defense schools. Results for states and other
jurisdictions refect the performance of students in
public schools only and are reported along with the
results for public school students in the nation.
NAEP mathematics results for grades 4 and 8 are
reported as average scores on a 0–500 scale. Because
NAEP scales are developed independently for each
subject, scores cannot be compared across subjects.
In addition to reporting an overall mathematics
score for each grade, scores are reported at fve
percentiles to show trends in results for students
performing at lower (10th and 25th percentiles),
middle (50th percentile), and higher (75th and 90th
percentiles) levels.