Ala. Code § 16-13-238

Should any county or city governing body fail to provide an amount of local tax support for its respective local board of education in an amount equivalent to the mills of ad valorem tax as required by law, the Foundation Program Fund allocation for the local board of education, as the case may be, shall be reduced by an amount equal to the difference between the amount of tax support actually provided and the amount of tax support required by law.