Va. Code § 22.1-373
Students shall be allowed to enroll in the school division of the student's intended residence if documentation is provided, at the time of enrollment, of Title 22 or 50 orders of the federal employee parent. Documentation indicating a permanent address within the school division shall be provided to the school division within 120 days of a student's enrollment or tuition may be charged, including tuition for the days since the student's enrollment. In the event that the federal employee parent is ordered to relocate under Title 22 or Title 50 orders before the one hundred twentieth day following the student's enrollment, the school division shall not charge tuition. Students eligible to enroll in a school division pursuant to this section may register, remotely or in person, for courses and other academic programs and participate in the lottery process for charter schools and college partnership laboratory schools in the school division in which such student will reside at the same time and in the same manner as students who reside in the local school division. The assignment of the school that such student will attend shall be determined by the school division.
Va. Code § 22.1-373