The percentage of 4th graders who scored at or above the Proficient level in the District of Columbia was higher in 2009 than it was in 2007.
In 2009, the percentage of 4th-graders who scored at or above the Proficient level in the District of Columbia was lower than the percentage for the United States.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), retrieved July 12, 2010 from the
NAEP Data Explorer.