(1)  A person commits the offense of criminal trespass in the first degree if:

    (a)   That person knowingly enters or remains unlawfully:

         (i)  In a dwelling; or

        (ii)  In or upon the premises of a hotel or apartment building;

    (b)   That person:

         (i)  Knowingly enters or remains unlawfully in or upon premises that are fenced or enclosed in a manner designed to exclude intruders; and

        (ii)  Is in possession of a firearm, as defined in section 134-1, at the time of the intrusion; or

    (c)   That person enters or remains unlawfully in or upon the premises of any public school as defined in section 302A-101, or any private school, after reasonable warning or request to leave by school authorities or a police officer; provided however, such warning or request to leave shall be unnecessary between 10:00 p.m. and 5:00 a.m.

     (2)  Criminal trespass in the first degree is a misdemeanor.