Today's Washington Post reports:

The D.C. Opportunity Scholarship Program, the first federal initiative to spend taxpayer dollars on private school tuition, was created by a Republican-led Congress in 2004 to help students from low-income families. Congress has cut off federal funding after the 2009-10 school year unless lawmakers vote to reauthorize it.

Overall, the study found that students who used the vouchers received reading scores that placed them nearly four months ahead of peers who remained in public school. However, as a group, students who had been in the lowest-performing public schools did not show those gains. There was no difference in math performance between the groups. . . .

The study, conducted by the Education Department's research arm, the Institute of Education Sciences, compared the performance and attitudes of students with scholarships with those of peers who were eligible but weren't chosen in a lottery. Parents of students in the program were more satisfied with their children's new schools and considered the schools safer, the report found. Students showed no difference in their level of satisfaction.