D.C. education officials will once again fail to meet their promises to follow federal deadlines for testing and helping mentally ill and disabled children, city leaders admitted in federal court Monday.

Under a consent decree D.C. signed to get out of a decade-long class-action suit stemming from the collapse of special education, city officials promised to meet federal deadlines in at least 65 percent of its special education cases by June. But Attorney General Peter Nickles said Monday the goal was a long shot, though “miracles have happened.”