New York Consolidated Laws, Penal Law - PEN § 140.15 Criminal trespass in the second degree

1. he or she knowingly enters or remains unlawfully in a dwelling; or

2. being a person required to maintain registration under article six-C of the correction law and designated a level two or level three offender pursuant to subdivision six of section one hundred sixty-eight-l of the correction law, he or she enters or remains in a public or private elementary, parochial, intermediate, junior high, vocational or high school knowing that the victim of the offense for which such registration is required attends or formerly attended such school. It shall not be an offense subject to prosecution under this subdivision if: the person is a lawfully registered student at such school; the person is a lawful student participant in a school sponsored event; the person is a parent or a legal guardian of a lawfully registered student at such school and enters the school for the purpose of attending their child's or dependent's event or activity; such school is the person's designated polling place and he or she enters such school building for the limited purpose of voting; or if the person enters such school building for the limited purposes authorized by the superintendent or chief administrator of such school.