U.S. PIRLS Reading Scores Over Time: 2001–2021
U.S. fourth-grade PIRLS reading scores were 542 in 2001, 540 in 2006, 556 in 2011, and 549 in 2016. The reported U.S. score for PIRLS 2021 was 548, but that administration assessed fifth-graders after U.S. testing was delayed to fall 2021.
NCES states that the 2021 U.S. result is not directly comparable with the earlier fourth-grade trend. The score is therefore reported alongside, rather than treated as a continuation of, the 2001–2016 trend.
U.S. PIRLS Score Statistics
Four U.S. cycles form the directly comparable fourth-grade series. PIRLS 2021 used a different U.S. grade population because testing was postponed.
U.S. PIRLS Reading Scores by Assessment Cycle
The connected line shows the comparable U.S. fourth-grade series through 2016. The 2021 fifth-grade result is plotted separately.
The chart axis begins at the PIRLS scale centerpoint of 500. The 2021 point is not connected to the fourth-grade series because NCES does not consider the U.S. fifth-grade result directly comparable with prior U.S. cycles.
U.S. PIRLS Reading Score Data, 2001–2021
Scores are national average reading scale scores reported by NCES from the Progress in International Reading Literacy Study.
| Cycle | U.S. Score | Grade Tested | Reporting Basis | Trend Status |
|---|---|---|---|---|
| 2001 | 542 | Grade 4 | PIRLS reading assessment | Comparable fourth-grade trend |
| 2006 | 540 | Grade 4 | PIRLS reading assessment | Comparable fourth-grade trend |
| 2011 | 556 | Grade 4 | PIRLS reading assessment | Comparable fourth-grade trend |
| 2016 | 549 | Grade 4 | PIRLS reading assessment | Comparable fourth-grade trend |
| 2021 | 548 | Grade 5 | U.S. paper-bridge result | Not directly comparable with prior U.S. cycles |
Reading Score Movement Across Comparable Cycles
The fourth-grade series changes direction rather than following a steady rise or decline.
2006 to 2011
The U.S. fourth-grade average rose from 540 to 556, a 16-point increase between the two PIRLS cycles.
2011 to 2016
The average then moved from 556 to 549. NCES identified the seven-point decline between these two cycles as measurable.
Long-Term Fourth-Grade Result
The 2001 score was 542 and the 2016 score was 549. NCES reported no measurable change between those endpoints.
2021 Population Change
U.S. testing shifted to fifth grade in fall 2021 after the planned spring administration was delayed. The 548 result should therefore be read as a separate reported point rather than a fifth observation in the same fourth-grade trend.
Data Sources and Comparability
National Center for Education Statistics, Progress in International Reading Literacy Study (PIRLS).
2001, 2006, 2011, 2016, and 2021.
Average PIRLS reading scale score. PIRLS uses a 0–1,000 reporting scale with a centerpoint of 500.
U.S. fourth-graders in 2001, 2006, 2011, and 2016.
U.S. fifth-graders tested in fall 2021 after the assessment was delayed by approximately six months from the planned spring administration.
The United States administered PIRLS digitally but NCES reported the U.S. paper-bridge score because of concerns about linking the digital and paper achievement results.
NCES explicitly states that prior U.S. PIRLS results are not directly comparable with the 2021 U.S. fifth-grade result because earlier cycles assessed fourth-graders. Score differences shown for 2001–2016 use the published national averages. Values are displayed as whole scale-score points, matching NCES reporting.
Official sources: NCES PIRLS 2021 U.S. Results; PIRLS 2021 Methodology and Technical Notes; NCES PIRLS 2016 Selected Findings; NCES U.S. PIRLS Trend Table; NCES PIRLS Program.
The 548 score from 2021 should not be interpreted as a one-point decline from the 549 score in 2016. The two estimates describe different U.S. grade populations and were collected under different administration conditions. Direct U.S. fourth-grade trend interpretation ends with the 2016 cycle.