(a) The total costs of operating the schools authorized by this chapter shall be borne entirely by the state and shall be paid from the Alabama Special Educational Trust Fund.
(b) Such costs shall be considered annually, upon the recommendation of the State Department of Education, by the joint interim committee made up of the Ways and Means Committee of the House and the Finance and Taxation Committee of the Senate. An estimate of costs for the 1977-78 school year and each succeeding year shall be made to the above mentioned committee when the budget estimates are presented by the State Department of Education.