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NAEP Analysis and Scaling → Initial Activities → Summaries of Item-Level Response Rates for NAEP Assessments → Summary Item Response Rates, Mathematics Combined National and State Assessment, by Item Type and Grade: 2019

​​NAEP Technical DocumentationSummary Item Response Rates, Mathematics Combined National and State Assessment, by Item Type and Grade: 2019

Summary item response rates, mathematics combined national and state assessment, by item type and grade: 2019
Statistic Multiple-choice items Dichotomous constructed-response items Polytomous constructed-response items
Not applicable.
Rounds to zero.
Missing responses include the categories "omitted" and "not-reached."
An "off-task" response (constructed-response items only) is a response that is unrelated to the question.
U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2019 Mathematics Assessment.
Grade 4
Number of items 142 58 60
Average percent missing 5.06 6.05 7.84
Minimum 0.75 0.36 0.81
Maximum 30.06 25.62 34.18
Average percent off-task 0.12 0.09
Minimum
Maximum 0.94 1.17
Average weighted percent correct 60.59 51.71 33.89
Grade 8
Number of items 125 66 62
Average percent missing 4.07 3.90 5.85
Minimum 0.31 0.17 0.22
Maximum 23.06 28.63 28.20
Average percent off-task 0.23 0.20
Minimum
Maximum 2.58 3.99
Average weighted percent correct 53.08 48.11 40.38
​

Summary item response rates, mathematics DBA national assessment, by item type and grade: 2019
Statistic Multiple-choice items Dichotomous constructed-response items Polytomous constructed-response items
Not applicable.
Rounds to zero.
Missing responses include the categories "omitted" and "not-reached."
An "off-task" response (constructed-response items only) is a response that is unrelated to the question.
DBA = Digitally based assessment.
U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2019 Mathematics Assessment.
Grade 12
Number of items 115 34 47
Average percent missing 1.44 5.93 5.94
Minimum 0.18 0.69 0.39
Maximum 16.82 22.75 26.72
Average percent off-task 0.35 0.26
Minimum
Maximum 2.95 1.96
Average weighted percent correct 50.30 32.81 29.36
​

Summary item response rates, mathematics PBA national assessment, by item type and grade: 2019
StatisticMultiple-choice itemsDichotomous constructed-response itemsPolytomous constructed-response items
Not applicable.
Rounds to zero.
Missing responses include the categories "omitted" and "not-reached."
An "off-task" response (constructed-response items only) is a response that is unrelated to the question.
PBA = Paper-based assessment.
U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2019 Mathematics Assessment.
Grade 12
Number of items1313243
Average percent missing3.089.7811.81
Minimum0.431.491.12
Maximum13.9932.2635.81
Average percent off-task0.570.96
Minimum
Maximum2.704.73
Average weighted percent correct47.8533.4923.72
​
Last updated 05 October 2023 (SK)