Fourth-grade students whose teachers reported that they spent at least 2 hours on science instruction per week had higher scores than students whose teachers spent less time per week.
NOTE: The NAEP science scale ranges from 0 to 300. 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 Science Assessment.