Fourth-graders who read for fun almost every day (228) scored higher than those who read for fun less frequently (210, 214, and 221 respectively).
NOTE: The NAEP reading scale ranges from 0 to 500. Some apparent differences between estimates may not be statistically significant. See complete data.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2009 Reading Assessment.