Maryland and Virginia math and reading standards are among the worst in the nation, while expectations in long-troubled D.C. schools are in the top 20, according to a new nationwide analysis.

Virginia and Maryland earned a D+ overall, ranking 41st and 43rd respectively, while D.C. earned a C+ and ranked 17th, according to a report compiled by researchers at the Harvard University Kennedy School of Government, and published in the journal Education Next.