So nothing has happened to them.
Even where I live, Chicago, most “events” are the same kind that happened in my schools fifty years ago. My kids had no problems in their schools and both turned out to be terrific men.
Fifty years ago it was more than rare to see in officer in our schools. And no the events today are different in that the students are certainly of another mindset toward authorities than fifty years ago...as well as their behavior when they are caught. Also students game the system to get each other in trouble.
So because nothing happened to your sons (who are now adults) you think that schools are just fine? That is truly naive.