The parent or guardian of a pupil from whom an injurious object has been taken pursuant to this section may be notified by school personnel of the taking.

School personnel may retain protective possession of any injurious object taken pursuant to this section until the risk of its use as a weapon has dissipated, unless prior to dissipation of the risk, the parent or guardian requests that the school personnel retain the object, in which case, the school personnel shall retain the object until the parent or guardian or another adult with the written consent of the parent or guardian appears personally to take possession of the injurious object from the school personnel.