No, a person who goes armed with, carries, or transports a firearm, of any kind, whether concealed or not, on the grounds of a public or nonpublic school commits a class "D" felony.  This does not apply to a person who has been specifically authorized under the Iowa Code or by the school to go armed, carry, or transport a firearm on the school grounds, including for the purpose of conducting an instructional program regarding weapons.