B.__For fiscal year 2006-07 and each subsequent year, the commissioner shall recalculate the amount by using the amount calculated under paragraph A as a base and appropriate trends in the Consumer Price Index or other comparable index.

5.__Review; approval.__Beginning in fiscal year 2008-09, and at least every 3 years thereafter, the commissioner, using information provided by a statewide education policy research institute, shall review the targeted amounts under this section and shall submit any recommended changes to the state board for approval.

§15682.__Regional adjustment

The commissioner shall make a regional adjustment in the total operating allocation for each school administrative unit determined pursuant to section 15683.__The regional adjustment must be based on the regional differences in teacher salary costs within labor market areas in the State, as computed by a statewide education policy research institute, and must be applied only to appropriate teacher salary and benefits costs as calculated under section 15678.__Beginning in fiscal year 2008- 09, and at least every 3 years thereafter, the commissioner, using information provided by a statewide education policy research institute, shall review the regional adjustment amounts under this section and shall submit any recommended changes to the state board for approval.

§15683.__Total operating allocation

For each school administrative unit, that unit's total operating allocation is the base total set forth in subsection 1 as adjusted in accordance with subsection 2.

1.__Base total.__The base total of a school administrative unit's total operating allocation is the sum of:

A.__The product of the school administrative unit's kindergarten to grade 8 per-pupil guarantee multiplied by the total of the kindergarten to grade 8 portions of the following pupil counts:

(1) The pupil count set forth in section 15674, subsection 1, paragraph C;