Amends the Downstate Teacher Article of the Illinois Pension Code. In provisions requiring an additional employer contribution for certain salary increases greater than 6%, provides that the System shall exclude salary increases given on or after July 1, 2025 resulting from overload work, including summer school, when the school district has certified to the System, and the System has approved the certification, that (i) the overload work is for the sole purpose of classroom instruction in excess of the standard number of classes for a full-time teacher in a school district during a school year and (ii) the salary increases are equal to or less than the rate of pay for classroom instruction computed on the teacher's current salary and work schedule. Effective immediately.