(a) The basic foundation program for each county for the fiscal year shall be the sum of the amounts computed in accordance with the provisions of sections four, five, six, seven, eight, nine and ten of this article. On the first working day of July in each year, the State Board shall determine the basic foundation program for each county for that fiscal year. Data used in the computations relating to net and adjusted enrollment, and the number of professional educators, shall be for the second month of the prior school term. Transportation expenditures used in these computations shall be for the most recent year in which data are available. The allocated state aid share of the county's basic foundation program shall be the difference between the cost of its basic foundation program and the county's local share as determined in section eleven of this article except as provided in subsection (b) of this section.
(b) The allocated state aid share shall be adjusted in the following circumstances in the following manner: Provided, That prior to such adjustment, the State Tax Commissioner shall provide the State Board, by January 15 of each year, a certified listing of those counties in which such adjustment shall be made pursuant to this subsection, together with the amount of revenue which will not be available to each county board in the ensuing fiscal year as a result of the circumstance:
(1) In those instances where the local share as computed under section eleven of this article is not reflective of local funds available because the county is under a final court order, or a final decision of a board of assessment appeals under section twenty-four-b, article three, chapter eleven of this code, to refund or credit property taxes paid in prior years, the allocated state aid share shall be the county's basic foundation program, minus the local share as computed under section eleven of this article, plus the amount of property tax the county is unable to collect or must refund due to the final court order or final decision of a board of assessment appeals: Provided, That said adjustment shall not be made or shall only be made proportionately when the Legislature fails to fund or funds only in part the public school basic foundation support plan state share at a level sufficient to cover the reduction in state share: Provided, however, That nothing herein provided shall be construed to require or mandate any level of funding by the Legislature.