The purpose of this chapter is to provide low-income parents residing in the District of Columbia, particularly parents of students who attend an elementary school or secondary school identified as one of the lowest-performing schools under the District of Columbia's accountability system, with expanded opportunities for enrolling their children in other schools in the District of Columbia, at least until the public schools in the District of Columbia have adequately addressed shortfalls in health, safety, and security, and the students in the District of Columbia public schools are testing in mathematics and reading at or above the national average.