Every person who willfully trespasses or, having no legitimate purpose for his or her presence, or having been suspended from attendance at any school, remains within a building used for a public or private school, college, university, junior college, or other public or private educational institution, or on the school grounds or campus grounds of any public or private school, college, university, junior college, or other public or private educational institution after having been forbidden so to do by a local or state police officer or a guard, security officer, or an official of the school, college, university, junior college or other educational institution, shall for the first offense be punished at least by a fine of not less than fifty dollars ($50.00) nor more than five hundred dollars ($500), and shall for the second offense be punished by a fine of not less than one hundred dollars ($100) nor more than five hundred dollars ($500), and for the third or any subsequent offense by a fine of not less than one hundred fifty dollars ($150) nor more than five hundred dollars ($500), and may in addition, be imprisoned not exceeding six (6) months.