Va. Code Ann. § 22.1-106

If a majority of those voting in the referendum vote against a uniform county school levy the governing body may levy such taxes as it deems best, subject to law. But if a majority of those voting vote for a uniform county school levy the governing body of the county thereafter shall, for each succeeding tax year, lay a uniform county school levy and the proceeds thereof shall be expended as provided by law for school purposes including the repayment of district school obligations.