Licensed school nurses with a Professional Educator License (formerly a Type 73 certificate) are under TRS. Their earnings are reported to TRS.
School nurses who are not licensed are under IMRF if they meet the 600-hour standard.
School nurses do not have a choice of participating in either IMRF or TRS. If they are licensed, they must be under TRS. If not licensed, they must be under IMRF. When a non-licensed school nurse is issued a Professional Educator License (formerly Type 73 certificate), the nurse should be enrolled in TRS and terminate IMRF participation.