Except as otherwise provided in subdivision 1a, any person who introduces or possesses an alcoholic beverage, as defined in section 340A.101, on any public elementary or secondary school ground or in any public elementary or secondary school building is guilty of a misdemeanor.
Subdivision 1 does not apply to the following:
(1) experiments in laboratories;
(3) a person possessing 3.2 percent malt liquor or intoxicating liquor as a result of a purchase from a person or organization holding a temporary license under section 340A.403, subdivision 2, or 340A.404, subdivision 10.
Any person who except by prescription of a licensed physician or permission of the hospital administrator shall introduce upon, or have in possession upon, or in, any state hospital or grounds thereof under the responsibility of the commissioner of human services any alcoholic beverage as defined in section 340A.101, shall be guilty of a misdemeanor.