Should schools be required to report absent children to their parents as soon as possible, rather than waiting until late in the afternoon?

An ongoing effort to provide safety to our kids. This question was presented to a school board and yet it has been months and still no action. This question has the support of a sheriff's union, the sheriff, a missing child tracking company and school officials (depending on the wording of any proposed measure). This question was also presented to several state legislatures, and still not any replies. What do you think? Good idea? Bad idea?