Relates to the establishment of multi-year cost allowances for the Mount Vernon school district

This bill modifies New York's education law to allow Mount Vernon City School District to use special multi-year cost calculations for up to four new school construction projects approved by voters in a 2017 bond vote. It directly affects the Mount Vernon district by changing how building aid is calculated for these specific projects. The key provision establishes that these special cost allowances can be applied twice within the first five years after the initial project approval, with no new allowances permitted for at least ten years after the first one. This is a technical adjustment to funding calculations, not a new spending measure.