I figured that’s what you meant but I don’t think remote schooling is a good solution to that problem, unless the plan is to never be anywhere there are crowds since those are also a target for shooters.

However I do feel for you. I’ve more or less ruled out the US as a place to do a postdoc for among others this reason (the others being difficult to bring my dog, terrible access to childcare and healthcare and just generally the entire social welfare system being a nightmare). I’m much less worried about actual violence than I am about trauma from exposure to drills though.