The purpose of this bill is to establish the "Connor Drennan Substitute Teachers' Act" that allows for retired teachers with STEM or language specializations to remain in a long-terms substitute teaching position up to 180 days per school year with no adverse impact on the retiree's retirement, to provide that no additional retirement system contributions will be made by the employer from such employment; and to allow the retirant to choose to contribute to his or her retirement from this employment should the retirant choose to do so.