Another School Shooting

Here is the link to the Middle School shooting in Indiana last Friday morning: http://www.news-leader.com/article/20110326/NEWS07/103260326/-1/RSS. Once again, the student who committed this act of violence had been expelled and should NOT have been on campus. This is now the third school shooting in 2011 that involved a perpetrator that had been expelled or relieved of work duties. Let's learn lessons from these incidents! What are your separation procedures? How are local responders notified and involved? Under what conditions are separated persons permitted to return? Please add your thoughts and suggestions.