(A) It shall be unlawful for any person to willfully interrupt or disturb any school by menace, profane swearing, vulgar language or any disorderly or unusual conduct, which causes substantial disruption of the activity of the school.
(B) A person is guilty of disruption of school activities if he or she comes into or remains in any school building, classroom or upon any school ground, or street, sidewalk or public way adjacent thereto, without lawful reason, and intentionally causes substantial disruption of the activities of the school.