Wisconsin State Journal Editorial:

That is why Madison School Superintendent Art Rainwater was right last week when he said a recent flurry of violence in Madison schools merited attention by families and the community, as well as educators.
School violence is not just a school problem. It is a community problem.
Rainwater also said something that was wrong, however: “Our schools are absolutely safe.”
To be sure, Madison schools deserve high marks for safety. But the evidence shows that safety is far from absolute.