(a) In addition to any taxes now authorized, or that may be hereafter authorized, by the Constitution and laws of Alabama, there is hereby levied a special school tax of fifty cents on each one hundred dollars worth of taxable property in the school tax district of the city of Huntsville in Madison county to be used solely for public school purposes; provided the levy of said tax shall first have been approved by the qualified electors of the school district as hereinafter provided.
(b) The proceeds of said tax shall be used exclusively for public school purposes of any nature whatsoever in the school tax district of the city of Huntsville, Alabama.
(c) The provisions of this Amendment to the Constitution of 1901, amending Amendment No. 218, allowing the proceeds from the tax levied herein to be used for school purposes of whatsoever nature within the district shall become effective upon the adoption of this Constitutional Amendment; provided, however, that the provisions of this amendment shall not become operative in the city of Huntsville unless approved by a majority of the qualified electors of the school tax district of the said city who vote thereon at a referendum election held for such purpose upon the call of the authorized official therein. Such election may be called no more frequently than every two years; provided further, that if this amendment is approved by a majority of the qualified electors of the school tax district of the city of Huntsville who vote thereon upon its submission, such election shall constitute a referendum held for such purpose and no further election need be called. Subsequent elections shall be called, held, conducted, paid for, and governed otherwise in the manner provided for an election on the school district tax authorized in Constitutional Amendment No. 3.