The following summary tables give the upper 99.8 percent confidence limit for the error rates for each of the instruments as well as the sampling information. The 99.8 percent confidence limit and the selection rates indicated were chosen to make these results comparable to those of administrations since 1983, all of which used the same parameters. There were no teacher questionnaires administered at grade 12.
Grade | Total samples | Selection rate | Number of different booklets | Number of booklets sampled | Number of fields sampled | Number of errors | Observed error rate | Upper 99.8% confidence limit1 |
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1 99.8% certainty that the true error rate is less than or equal to 0.0155 for the observed error rate of 0.0018. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2011 Mathematics Assessment. |
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4 | 214,205 | 1/2079 | 50 | 103 | 7,416 | 1 | 0.0001 | 0.0011 |
8 | 180,396 | 1/1735 | 50 | 104 | 8,602 | 2 | 0.0002 | 0.0012 |
Grade | Total samples | Selection rate | Number of different booklets | Number of booklets sampled | Number of fields sampled | Number of errors | Observed error rate | Upper 99.8% confidence limit1 |
---|---|---|---|---|---|---|---|---|
1 99.8% certainty that the true error rate is less than or equal to 0.0155 for the observed error rate of 0.0018. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2011 Reading Assessment. |
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4 | 222,232 | 1/1852 | 60 | 120 | 6,648 | 3 | 0.0005 | 0.0018 |
8 | 174,654 | 1/960 | 91 | 182 | 11,898 | 2 | 0.0002 | 0.0009 |
Grade | Total samples | Selection rate | Number of different booklets | Number of booklets sampled | Number of fields sampled | Number of errors | Observed error rate | Upper 99.8% confidence limit1 |
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1 99.8% certainty that the true error rate is less than or equal to 0.0155 for the observed error rate of 0.0018. NOTE: Only students at grade 8 were assessed in 2011. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2011 Science Assessment. |
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8 | 124,174 | 1/1634 | 36 | 76 | 5,742 | 1 | 0.0002 | 0.0015 |
Grade | Total samples | Selection rate | Number of different booklets | Number of booklets sampled | Number of fields sampled | Number of errors | Observed error rate | Upper 99.8% confidence limit11 |
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1 99.8% certainty that the true error rate is less than or equal to 0.0155 for the observed error rate of 0.0018. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2011 Mathematics, Reading, and Science Assessments. |
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4 | 8,665 | 1/ 867 | 2 | 10 | 925 | 0 | 0 | 0.0067 |
8 | 5,526 | 1/276 | 4 | 20 | 2,485 | 0 | 0 | 0.0025 |
12 | 1,217 | 1/243 | 1 | 5 | 360 | 0 | 0 | 0.0171 |
Grade | Total samples | Selection rate | Number of different booklets | Number of booklets sampled | Number of fields sampled | Number of errors | Observed error rate | Upper 99.8% confidence limit1 |
---|---|---|---|---|---|---|---|---|
1 99.8% certainty that the true error rate is less than or equal to 0.0155 for the observed error rate of 0.0018. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2011 Mathematics, Reading, and Science Assessments. |
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4 | 42,393 | 1/8479 | 1 | 5 | 940 | 0 | 0 | 0.0066 |
8 | 73,552 | 1/5658 | 4 | 13 | 1,495 | 0 | 0 | 0.0042 |
Instrument | Total samples | Selection rate | Number of different booklets | Number of records sampled | Number of fields sampled | Number of errors | Observed error rate | Upper 99.8% confidence limit1 |
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1 99.8% certainty that the true error rate is less than or equal to 0.0155 for the observed error rate of 0.0018. NOTE: The 2011 SD and ELL questionnaires are in a worksheet format. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP) 2011 Mathematics, Reading, and Science Assessments. |
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SD questionnaires | 151,450 | 1/4589 | 2 | 33 | 1,169 | 0 | 0 | 0.0053 |
ELL questionnaires | 85,097 | 1/3868 | 2 | 22 | 324 | 0 | 0 | 0.0190 |