(2) Code of conduct. (i) On or before July 1, 2001, each board of education and board of cooperative educational services shall adopt and provide for the enforcement of a written code of conduct for the maintenance of order on school property and at school functions, as defined in Education Law sections 11(1) and (2) and 2801(1), which shall govern the conduct of students, teachers, other school personnel, and visitors. Such a code shall be developed in collaboration with student, teacher, administrator, and parent organizations, school safety personnel and other school personnel and shall be approved by the board of education, or other governing body, or by the chancellor of the City School District in the case of the City School District of the City of New York. The City School District of the City of New York shall adopt a district-wide code of conduct and each community school district may, upon approval of the chancellor, adopt and implement additional policies, which are consistent with the city school district's district-wide code of conduct, to reflect the individual needs of each community school district. A school district or board of cooperative educational services shall adopt its code of conduct only after at least one public hearing that provides for the participation of school personnel, parents, students, and any other interested parties.

d.  [Eff until June 30, 2018] (1) Consistent with the federal gun-free schools act, any public school pupil who is determined under this subdivision to have brought a firearm to or possessed a firearm at a public school shall be suspended for a period of not less than one calendar year and any nonpublic school pupil participating in a program operated by a public school district using funds from the elementary and secondary education act of nineteen hundred sixty-five who is determined under this subdivision to have brought a firearm to or possessed a firearm at a public school or other premises used by the school district to provide such programs shall be suspended for a period of not less than one calendar year from participation in such program. The procedures of this subdivision shall apply to such a suspension of a nonpublic school pupil. A superintendent of schools, district superintendent of schools or community superintendent shall have the authority to modify this suspension requirement for each student on a case-by-case basis. The determination of a superintendent shall be subject to review by the board of education pursuant to paragraph c of this subdivision and the commissioner pursuant to section three hundred ten of this chapter. Nothing in this subdivision shall be deemed to authorize the suspension of a student with a disability in violation of the individuals with disabilities education act or article eighty-nine of this chapter. A superintendent shall refer the pupil under the age of sixteen who has been determined to have brought a weapon or firearm to school in violation of this subdivision to a presentment agency for a juvenile delinquency proceeding consistent with article three of the family court act except a student fourteen or fifteen years of age who qualifies for juvenile offender status under subdivision forty-two of section 1.20 of the criminal procedure law. A superintendent shall refer any pupil sixteen years of age or older or a student fourteen or fifteen years of age who qualifies for juvenile offender status under subdivision forty-two of section 1.20 of the criminal procedure law, who has been determined to have brought a weapon or firearm to school in violation of this subdivision to the appropriate law enforcement officials.

(2)  Nothing in this paragraph shall be deemed to mandate such action by a school district pursuant to subdivision one of this section where such weapon or firearm is possessed or brought to school with the written authorization of such educational institution in a manner authorized by article two hundred sixty-five of the penal law for activities approved and authorized by the trustees or board of education or other governing body of the public school and such governing body adopts appropriate safeguards to ensure student safety.

(3)  As used in this paragraph:

• (i)  “firearm” shall mean a firearm as defined in subsection a of section nine hundred twenty-one of title eighteen of the United States Code;