Because campaign promises don't mean a damn thing:
The program is wildly popular with parents and children—there are four applicants for every available slot—and a recent Department of Education study found that participants do significantly better than their public school peers. Indeed, after three years in private schools, students who entered the program at its inception were 19 months ahead in reading of applicants unlucky enough to still be trapped in D.C.'s public schools.
Yet working with congressional Democrats and despite his pledge to put politics and ideology aside in education, the Obama administration has effectively killed the program through a backdoor legislative move. "[Education] Secretary [Arne] Duncan will use only one test in what ideas to support with your precious tax dollars," says the president. "It's not whether it's liberal or conservative, but whether it works."