Considering he has like 14 kids all the same age it probably gets a bit tough to be all vigilante.
But yeah, I agree with do-it-yourself not waiting and hoping on the cops.
All the WA/WM schools sent home letters and everybody is being vigilant. Unfortunately my work hours begin and end well before and after my kids go to school.
Although two being in 5k and two in 4k, it's a pretty much Car -> Door then reversed Door -> Car kind of an affair. We picked a school in our district, but on the other end of our burb, so Mrs. Dual does all the driving and they're never unaccompanied.
And an open carry show of force is somewhat blunted by the whole guns/schools-thing these days. WI has a 1000 foot rule, with exceptions for residents, traveling/passing through etc. but not "scaring pedophiles".
I'm about 110% certain I'd become a bigger issue than the predator in very short order.