13. a. As used in this section, "school leader" means a school district staff member who holds a position that requires the possession of a chief school administrator, principal, or supervisor endorsement.
b. A school leader shall complete training on issues of school ethics, school law, and school governance as part of the professional development for school leaders required pursuant to State Board of Education regulations. Information on the prevention of harassment, intimidation, and bullying shall also be included in the training. The training shall be offered through a collaborative training model as identified by the Commissioner of Education, in consultation with the State Advisory Committee on Professional Development for School Leaders.