Ala. Code § 16-13-141

On or before the first day of September of each year, the Comptroller, or such state official as may be charged by law with the responsibility of estimating the income from the various state revenue measures, shall certify to the State Superintendent of Education the income estimated to be available during the next fiscal year to meet the various appropriations for the public elementary and high schools of the state. The state superintendent shall thereupon estimate the amount of each of these funds to be apportioned to each of the school systems of the state during the next fiscal year.