The District’s fourth- and eighth-graders—public school and public charter students combined—achieved “significant increases ” in math scores this year on the National Assessment of Educational Progress (NAEP), school system officials said this morning.

Reading scores, however, remain flat compared to 2009, the last time the test was administered. The federally-administered test, known as the “Nation’s Report Card,” is considered the gold standard of standardized exams.

Actual scores are due to be released at 11 a.m. In a statement, State Superintendent Hosanna Mahaley said results show that the District was one of only nine states to show improvement in fourth grade math scores and one of only 13 states with gains in eighth grade math.

D.C. is one of only four states that showed gains in math in both grades.