Does reading a lot of Wikipedia give people a wrong idea how science works?

[FlatAssembler]

The point is that labeling a place a gun-free zone makes it a soft target. A would-be shooter can be almost sure he won't get shot there.
That probably also plays a role, but it doesn't explain why mass shootings are less common in schools where teachers are armed compared to schools where teachers aren't armed.

(my bold)

Citation needed.

As we've seen, your opinions are rarely fact adjacent, let alone based on actual facts.

ETA: You seem to be falling prey to the myth of "good guys with guns" who will allegedly stop bad guys with guns. They are a myth.

If that's not true, why it is that school shootings are far more common in California than in Texas (California being the state with the highest number of school shootings)? In Texas, teachers are usually armed. In California, teachers are almost never armed.