In my mind, this is coming from someone who is not a LEO or ex-mil, having a single guard who sets at a desk all day is of minimal value. Its some level of deterrent but it would be easy for a determined attacker or attackers to take out that single guard in a static post.
To have some real effect in stopping/minimizing shootings you need multiple guards on random patrols around campus. That keeps any would be attackers on edge because around every corner is potentially an armed threat. The threat can come from any direction and the threat exists the moment you make yourself known.
Mind you, I think you get more bang for your buck by training and arming teachers. The "threat" to the bad guys is much more hidden, you have no idea how many and which teachers are armed. Beyond that, armed threats to the bad guy will not stand out (in uniform).
A single security guard at a desk is better than nothing, two or three guards patrolling a school is better but IMO the most cost effective and difficult to counter solution is an armed school official.
To have some real effect in stopping/minimizing shootings you need multiple guards on random patrols around campus. That keeps any would be attackers on edge because around every corner is potentially an armed threat. The threat can come from any direction and the threat exists the moment you make yourself known.
Mind you, I think you get more bang for your buck by training and arming teachers. The "threat" to the bad guys is much more hidden, you have no idea how many and which teachers are armed. Beyond that, armed threats to the bad guy will not stand out (in uniform).
A single security guard at a desk is better than nothing, two or three guards patrolling a school is better but IMO the most cost effective and difficult to counter solution is an armed school official.