Jefferson County Public Schools’ fourth and eighth graders rank even with the national average for many urban students in math. That’s according to a report released today called the Trial Urban District Assessment.It’s the first time JCPS has been included in the assessment. Seventeen other urban school districts were measured in 2009.While Jefferson County students rank among the national average, ten of the 18 urban school districts tested below the national average, says Michael Casserly, the executive director of the Council of Great City Schools.“Urban schools in general, however, are getting better, and we are determined to make them better still," says Casserly. "We are encouraged by the new results, but we are not satisfied with them. We know we need to accelerate and we know we need to close our achievement gaps.”The report is produced every two years. This year, Washington, D.C. public schools were found to be among the most improved urban school districts in the country.