"Damn the NRA couldn’t survive one year without school shootings"
First result for my search was https://www.edweek.org/leadership/school-shootings-this-year...
So turns out that there have been fatal school shootings in 2020. Not a lot and I wouldn't really classify all of the items as school shootings. I was still a bit surprised though.
The one about the ROTC accident I found especially strange. I don't know anything about ROTC. I for some reason assumed that learning to shoot was something they would do. Reading the article it seems that the weapon is contraband.