you don't have a personal aversion to working in this setting in and of itself, and if
you can manage the pay-cut, then I think it would be good to consider general wisdom of the ages, so-to-speak: Kids grow up and are gone. We don't get our days of parenting (minor-aged) children back once they're over. You've already made some life/career changes in order to spend more time with your family, so it seems like these are ideas that resonate with you on at least some level.
I don't particularly enjoy OPC's (Other People's Children) but I think there are challenges in the school setting that make a good nurse a huge
asset, and I think the setting would involve plenty of stimulation/challenges for the nurse as well. You can always choose to be good at what you do and make whatever good of it that you determine to make of it - for yourself and for the population you serve. Good things.
I like having irons in more than one fire - not sure how that would work with a school job. In my ideal world I would have the job that allowed me to spend as much time with my kids as humanly possible while also showing up in the ED now and then just to get rid of some energy or something.
And that is because there comes a point where the "time with my kids" thing becomes way more urgent and their days of being dependent suddenly seem way more numbered than you realized when they were really little, and it's all just more "looming..." No point in avoidable regrets, you know?
Consider asking the mods to help you move this to the School Nursing subforum - you will get lots of excellent perspectives and wisdom and great advice over there, I'm sure!