Ala. Code § 45-52-161.03
Twenty percent of each TVA payment remaining after the allocations, distributions, and payments described in Section 45-52-161.02 shall be allocated among the participating boards of education as follows: The commission shall distribute and pay to each participating board of education an amount bearing the same proportion to the total amount to be so allocated as the Foundation Program calculated costs for each participating board of education bears to the total Foundation Program calculated costs of all public school systems operated by all of the participating boards of education, as deter-mined by the State Department of Education, it being the intent of this section to apportion such payments to the participating boards of education in the same manner and in the same percentages as the revenue commissioner of the county is required to apportion and distribute ad valorem taxes to those boards of education pursuant to Section 16-13-31, or successor provision.
Ala. Code § 45-52-161.03 (1975)