G. A school district or charter school shall expel from school for a period of not less than one year a pupil who is determined to have brought a firearm to a school within the jurisdiction of the school district or the charter school, except that the school district or charter school may modify this expulsion requirement for a pupil on a case by case basis. This subsection shall be construed consistently with the requirements of the individuals with disabilities education act (20 United States Code sections 1400 through 1420). For the purposes of this subsection:

• 1. “Expel” may include removing a pupil from a regular school setting and providing educational services in an alternative setting.
• 2. “Firearm” means a firearm as defined in 18 United States Code section 921.