DCPS scores are improving faster than elsewhere, but also have further to go.
National test results show D.C. outpaced every other urban school district in the country for math and reading gains.
Known as the Trial Urban District Assessments, the federal study looked at math and reading scores from 21 big cities around the country.
D.C. was the only urban school system that showed statistical growth in all the tested areas: fourth grade math and reading and eight-grade math and reading.
In a statement, Mayor Vincent Gray said the test results show DCPS is on the right track.
"We are very proud of our students and our teachers, and these results are another reason why we need to stay the course and double down on what’s working for our students," Gray said.
But while D.C. may have had largest gains, the city is still in the back of the pack overall, posting below-average tests scores for compared to other large cities in the study.
The District also has the largest gap in achievement between white students and black students.
"We still have a long way to go, but our students are growing, our teachers are excelling and we are ecstatic about today’s results," said Chancellor Kaya Henderson. "I firmly believe that we are making these important strides because of our commitment to support our teachers and raise the bar for our students."
DCPS 2013 TUDA Results