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NAEP Technical DocumentationNumber of Items in the 2019 Science Assessment
Number of items in subscales as defined before scaling, science DBA national assessment, by subscale and grade: 2019
Grade
Total
Physical science
Earth and space sciences
Life science
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 Science Assessment.
4
186
62
59
65
8
210
65
85
60
12
252
103
61
88
Number of items in subscales as defined before scaling, science PBA national assessment, by subscale and grade: 2019
Grade
Total
Physical science
Earth and space sciences
Life science
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 Science Assessment.
4
143
48
45
50
8
166
55
64
47
12
187
67
44
76
Number of items as defined after univariate scaling, science DBA national assessment, by grade: 2019
Grade
Total
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 Science Assessment.
4
185
8
206
12
244
Number of items as defined after univariate scaling, science PBA national assessment, by grade: 2019
Grade
Total
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 Science Assessment.
4
140
8
163
12
180
Number of items in subscales as defined after multivariate scaling, science DBA national assessment, by subscale and grade: 2019
Grade
Total
Physical science
Earth and space sciences
Life science
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 Science Assessment.
4
186
62
59
65
8
208
64
85
59
12
251
103
61
87
Number of items in subscales as defined after multivariate scaling, science PBA national assessment, by subscale and grade: 2019
Grade
Total
Physical science
Earth and space sciences
Life science
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 Science Assessment.
