562. A surtax shall be levied upon every immoveable belonging to class No. 1 the assessment of which, established under section 556, exceeds $100,000.
The surtax shall affect the excess over such amount of $100,000.
The rate of such surtax shall be equal to the excess of the rate applicable to immoveables of class No. 2 over the rate applicable to immoveables of class No. 1.
Sections 559 to 561 shall apply to such surtax.
For all legal purposes, such surtax shall constitute a school tax.