NAEP Analysis and Scaling → Scale Linking and Transformation to the Reporting Metric → Transformation Constants for NAEP Assessments → Coefficients of Linear Transformations of the Content-Strand Scales From the Calibrating Scale Units to the Units of the Reporting Scale, Mathematics Long-Term Trend Assessment, by Age: 2008

NAEP Technical DocumentationCoefficients of linear transformations of the content-strand scales from the calibrating scale units to the units of the reporting scale, mathematics long-term trend assessment, by age: 2008

Age	A	B
NOTE: Transformed scale scores below 0 were reset to values of 0, and any transformed scale scores greater than 500 were set to values of 500. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2008 Mathematics Long-Term Trend Assessment.
9	35.60	240.81
13	35.81	279.90
17	30.60	305.62

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