325 ILCS 55/2
Upon entry of a report of a missing child born in Illinois into the Law Enforcement Agencies Data System, the Illinois State Police shall notify the Registrar of the disappearance and shall provide the Registrar with information concerning the identity of the missing child.
If the Illinois State Police has reason to believe that a missing child may be enrolled in an Illinois elementary or secondary school, it shall notify the last such known school as to the disappearance, at which time the school shall flag the missing child's record pursuant to Section 5.
Upon learning of the recovery of a missing child, the Illinois State Police shall so notify the Registrar.
The Illinois State Police shall by rule determine the manner and form of notices and information required by this Article.
325 ILCS 55/2