Iowa Code § 280.27: Reporting violence — immunity.

An employee of a school district, an accredited nonpublic school, or an area education agency who participates in good faith and acts reasonably in the making of a report to, or investigation by, an appropriate person or agency regarding violence, threats of violence, physical or sexual abuse of a student, or other inappropriate activity against a school employee or student in a school building, on school grounds, or at a school-sponsored function shall be immune from civil or criminal liability relating to such action, as well as for participating in any administrative or judicial proceeding resulting from or relating to the report or investigation.