PIRLS and ePIRLS Results

Table 8. Trends in U.S. fourth-grade students’ PIRLS overall reading average scale scores and cut scores at the 10th, 25th, 75th, and 90th percentiles: 2001, 2006, 2011, and 2016
Percentile	2001 Score	2001 ▲▼	2001 s.e.	2006 Score	2006 ▲▼	2006 s.e.	2011 Score	2011 ▲▼	2011 s.e.	2016 Score	2016 s.e.
Average	542	\|	3.8	540	▼	3.4	556	▲	1.6	549	3.1
10th percentile	431	\|	8.8	441	\|	5.0	458	\|	3.1	446	6.3
25th percentile	492	\|	5.9	494	\|	4.0	510	▲	2.3	501	4.1
75th percentile	601	\|	3.4	592	▼	3.8	607	\|	1.6	604	3.3
90th percentile	640	\|	3.1	631	▼	3.7	648	\|	2.2	645	4.0

\| Blank cell.
▲ Average score or cut score is higher than the 2016 average score or cut score at the05 level of statistical significance.
▼ Average score or cut score is lower than the 2016 average score or cut score at the05 level of statistical significance.
NOTE: U.S. trend tables show data for all available years. In 2001, 2006 and 2016, the United States met guidelines for sample participation rates only after replacement schools were included. In 2011, the National Defined Population covered 90 percent to 95 percent of the National Target Population. Standard error is abbreviated as s.e.
SOURCE: International Association for the Evaluation of Educational Achievement (IEA), Progress in International Reading Literacy Study (PIRLS), 2001, 2006, 2011, and 2016.