Conn. Gen. Stat. § 10-76bbb: Requirements re cost increases charged by charging entities.

(a) Except as otherwise provided in subsection (b) of this section, for the school year commencing July 1, 2025, and each school year thereafter, a charging entity, as defined in section 10-76a, shall not increase the amount charged to a local or regional board of education for a service provided pursuant to an individualized education program for a student during said school year, except a charging entity may increase or lower the total amount charged to such board if the charging entity adds or decreases the services provided pursuant to a change in such student's individualized education program.

(b) For the school year commencing July 1, 2025, and each school year thereafter, the Department of Education may permit, upon request, a charging entity to increase the amount it charges for special education services to a local or regional board of education if there is a substantial increase in costs (1) for the services being provided for a student, or (2) of the operation of such charging entity. The Commissioner of Education shall prescribe the form and manner in which a charging entity may make such request, including any documentation such charging entity is to provide showing such substantial increase in costs. The commissioner shall review each request and provide a written decision approving or denying such request not later than sixty days after receiving such request.