Fourth-graders who reported never using a calculator during tests or quizzes (242) scored higher than those who reported always (208) or sometimes (237) doing so.
NOTE: The NAEP Mathematics 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 Mathematics Assessment.