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NAEP Analysis and Scaling → Estimation of NAEP Scale Scores → NAEP Assessment IRT Parameters → Mathematics Long-Term Trend Assessment Item Response Theory Parameters

NAEP Technical DocumentationMathematics Long-Term Trend Assessment Item Response Theory Parameters

The links provided below contain Item Response Theory (IRT) parameters for NAEP mathematics long-term trend items that were scaled, as well as the block in which each item appears for each age group and the position of each item within its block. Note that these item parameters are provided in the metrics used for the original univariate scale.

Long-Term Trend Assessment: 2004

Age 9
Age 13
Age 17

Long-Term Trend Bridge Study: 2004

Age 9
Age 13
Age 17

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