N.Y. Educ. Law § 3028-C
Any school employee having reasonable cause to suspect that a person has committed an act of violence while in or on school property, or having reasonable cause to suspect that a person has committed an act of violence upon a student, school employee or volunteer either upon school grounds or elsewhere, or having reasonable cause to suspect that a person has brought a gun, knife, bomb or other instrument capable of or that appears capable of causing death or physical injury upon school grounds who in good faith reports such information to school officials, to the commissioner, or to law enforcement authorities, shall have immunity from any civil liability that may arise from the making of such report, and no school district or school district employee shall take, request or cause a retaliatory action against any such employee who makes such report.
N.Y. Educ. Law § 3028-C