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| Grade | Session type | Number of sessions | Number of withdrawn/ ineligible students | Number of students excluded from the assessment | Number of students to be assessed | Number of students absent the day of testing | Number of students assessed |
|---|---|---|---|---|---|---|---|
| 4 | Total grade 4 | 1,040 | 450 | 180 | 391,100 | 870 | 390,200 |
| Science paper based, public/private schools | 1,040 | 450 | 180 | 10,700 | 470 | 10,200 | |
| Science, mathematics pilot, reading pilot, meaning vocabulary pilot digitally based, public/private schools | — | — | — | 41,200 | 30 | 41,200 | |
| Mathematics and reading digitally based, public/private schools | — | — | — | 335,500 | 370 | 335,100 | |
| Mathematics - Puerto Rico digitally based, public/private schools | — | — | — | 3,700 | # | 3,700 | |
| 8 | Total grade 8 | 1,030 | 460 | 180 | 380,000 | 890 | 379,100 |
| Science paper based, public/private schools | 1,030 | 460 | 180 | 11,400 | 610 | 10,800 | |
| Science, mathematics pilot, reading pilot, meaning vocabulary pilot digitally based, public/private schools | - | — | — | 40,500 | 20 | 40,500 | |
| Mathematics and reading digitally based, public/private schools | — | — | — | 324,400 | 260 | 324,100 | |
| Mathematics - Puerto Rico digitally based, public/private schools | — | — | — | 3,700 | # | 3,700 | |
| 12 | Total grade 12 | 1,810 | 5,260 | 1,120 | 85,800 | 7,100 | 78,700 |
| Mathematics, reading, science paper based, public/private schools | 1,810 | 5,260 | 1,120 | 41,500 | 7,040 | 34,500 | |
| Mathematics, reading, science digitally based, public/private schools | — | — | — | 44,300 | 60 | 44,200 | |
| # Rounds to zero. — Not available NOTE: The "Number of students to be assessed" and "Number of students assessed" counts are rounded to the nearest tenth, hundredth, and thousandth. Detail may not sum to totals because of rounding. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2019 Assessment. | |||||||