It is unlawful for any person who is without a business purpose for being there to loiter in any public or private school building, group day care center, or community family-support centers, around an entrance thereof, upon the school or center grounds, or upon a public way within 100 yards of the school or center grounds, and to refuse to leave such premises when requested to do so by a school security officer, a center representative, or a police officer. Any person violating the provisions of this section is guilt of a misdemeanor and, upon conviction thereof, is subject to a fine of not more than $500 or imprisonment for not more than 90 days, or both fine and imprisonment, in the discretion of the court City Code, 1976/83, art. 19, §58 Ord. 75-976 Ord. 91-839