What more can schools do?

In an earlier post I mentioned the difficult boundary of balancing student intervention, covering the liability aspects of the university and refraining from turning our university campuses into locked down prisons with metal detectors and body searches before class.

It seems that Time shares the same sentiment in asking, What More Can Schools Do? While none of us would like to see an event like this happen again we have to be conscious to prevent the sacrifice of our freedoms and privacy.

However much time colleges put into their efforts, there's no surefire way to predict violent behavior, and jumping to conclusions can have dire consequences for troubled students.

What can be done to find middle ground?