The purpose of this legislation, known as the "Reinvest in Public Schools Act of 2026," is to modify tax regulations to allow certain advance refunding bonds issued by public school districts to be tax-exempt. This change aims to support public schools in financing construction and rehabilitation projects by making it easier and more cost-effective for them to manage their debt. Key provisions of the legislation include the amendment of the Internal Revenue Code to permit tax-exempt status for advance refunding bonds under specific conditions.