(1) Except as provided in subsection (2) of this section, an elementary school shall not suspend a student in pre-kindergarten through second grade. Each school district shall develop a policy to implement this section which shall include disciplinary measures inside the school as an alternative to suspension.

(2) An elementary school may suspend a student in pre-kindergarten through second grade if such student brings a deadly weapon as defined in section 28-109 on school grounds, in a vehicle owned, leased, or contracted by a school being used for a school purpose or in a vehicle being driven for a school purpose by a school employee or his or her designee, or at a school-sponsored activity or athletic event.