Appropriations, other than from the General Revenue Fund, made for school purposes under any statute or law, shall be payable out of the first funds available after payment of the salaries of public officers and other current expenses as hereinbefore provided, and the moneys for such appropriations shall be available as fast as they come in, without waiting for the whole amount of any such appropriation to be received into the Treasury.
Fla. Stat. § 215.15