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NAEP Analysis and Scaling → Scale Linking and Transformation to the Reporting Metric → Transformation Constants for NAEP Assessments → Coefficients of Linear Transformation of the Subscales from the Calibrating Scale Units to the Units of the Reporting Scale, Reading Combined National and State Assessment, by Subscale and Grade: 2019

​​NAEP Technical DocumentationCoefficients of Linear Transformation of the Subscales from the Calibrating Scale Units to the Units of the Reporting Scale, Reading Combined National and State Assessment, by Subscale and Grade: 2019

Coefficients of linear transformation of the subscales from the calibrating scale units to the units of the reporting scale, reading combined national and state assessment, by subscale and grade: 2019
Subscale A B
Transformed scale scores below 0 were reset to values of 0, and transformed scale scores greater than 500 were reset to values of 500.
U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2019 Reading Assessment.
Grade 4
Literary 39.72 222.47
Informational 44.14 217.31
Grade 8
Literary 40.21 260.87
Informational 38.55 266.57
​

Coefficients of linear transformation of the subscales from the calibrating scale units to the units of the reporting scale, reading DBA national assessment, by subscale and grade: 2019
Subscale A B
DBA = Digitally based assessment. Transformed scale scores below 0 were reset to values of 0, and transformed scale scores greater than 500 were reset to values of 500.
U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2019 Reading Assessment.
Grade 12
Literary 56.47 275.19
Informational 39.11 288.80
​

Coefficients of linear transformation of the subscales from the calibrating scale units to the units of the reporting scale, reading PBA national assessment, by subscale and grade: 2019
SubscaleAB
PBA = Paper-based assessment. Transformed scale scores below 0 were reset to values of 0, and transformed scale scores greater than 500 were reset to values of 500.
U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2019 Reading Assessment.
Grade 12
Literary55.15275.88
Informational39.55288.53
​
Last updated 05 October 2023 (SK)