Modifies conditions for regional school district use of property assessments as basis for apportionment of costs to participating municipalities.

This bill changes how regional school districts in New Jersey calculate cost-sharing among participating municipalities based on property assessments. It requires that if a district uses property values for apportionment, all municipalities must either have recent revaluations (within five years of each other), maintain assessment-to-sales ratios above 90%, or have ratios within 5 percentage points of each other. These conditions ensure property-based cost-sharing is fair and accurate, preventing discrepancies from outdated or inconsistent property valuations. The bill does not alter existing options for cost-sharing based on student enrollment numbers.