Subd. 4. Local policy components. (a) Each district and school policy implemented under this section must, at a minimum: (1) designate a staff member as the primary contact person in the school building to receive reports of prohibited conduct under clause (3), ensure the policy and its procedures including restorative practices, consequences, and sanctions are fairly and fully implemented, and serve as the primary contact on policy and procedural matters implicating both the district or school and the department; (2) require school employees who witness prohibited conduct or possess reliable information that would lead a reasonable person to suspect that a student is a target of prohibited conduct to make reasonable efforts to address and resolve the prohibited conduct; * (3) provide a procedure to begin to investigate reports of prohibited conduct within three school days of the report, and make the primary contact person responsible for the investigation and any resulting record and for keeping and regulating access to any record;