Ind. Code § 35-47-9-2
(a) A person may not be charged with an offense under this subsection if the person may be charged with an offense described in subsection (c). A person who knowingly or intentionally possesses a firearm:
(2) on a school bus;
commits a Level 6 felony.
(b) It is a defense to a prosecution under subsection (a) that:
(2) the firearm is:
As added by P.L.140-1994, SEC.11. Amended by P.L.172-2013, SEC.13; P.L.158-2013, SEC.601; P.L.157-2014, SEC.5; P.L.168-2014, SEC.89; P.L.109-2015, SEC.54.