For about the last 15 years, I would agree with the school board’s lawyers. At this point is is kinda an occupational hazard, kinda like vehicle accidents are for me as a truck driver.
Should it be normalized? I would say too late. Should teachers be payed more as a result? I’m a little surprised anyone is will to take the job as is even if the wages were doubled.
School board can’t do much except try to minimize the current threat and teachers aren’t allowed to do anything to minimize the threat going forward, lest they be accused of indoctrinating children. So, ya, it’s an occupational hazard.