It is unlawful to, in any school room or in any building or on the grounds adjacent to the same, disturb or interrupt the peace and good order of such school while in session. It is unlawful for a person not in immediate attendance in such school and being in such building or upon the premises belonging thereto to conduct or behave himself or herself improperly. It is unlawful for a person, upon the request of a teacher of such school or the person in charge thereof to leave said building or premises, to neglect or refuse so to do.
('72 Code, § 910:20) Penalty, see § 10.99