Lynn, you should read the above post by Veronica C, another Kelly parent.  Two very different versions of this story.  Do you know for a fact that the original child is telling the truth?  Do you have concrete proof that he and other students at Kelly were in danger?  If so, you need to report that information.  

If not, you are choosing to believe one side of the story - the mom who posted on Facebook.  The other side is what law enforcement is saying, with parents corroborating law enforcement's side of the story.  Your choice what to believe.  Your comment about the cop being out of line is misinformed, however.  Law enforcement determined there was no threat to the school.  Her post was causing concern bordering on panic.  They asked her to take it down and advised her that failure to do so could result in criminal charges.  They COULD have just charged her without the courtesy of a warning.  Kudos to law enforcement for their restraint and care for the safety of our kids.