Let's see. I substitute teacher in grade five, I think, refused to call us by name and assigned us numbers. Unfortunately for her, we had the smartest/most unruly class in the school. We won against that teacher, as we did many a time while there. We found out a year later that she had been arrested and charged with abusing her two children.
In grade nine, someone from my old school got put through a plate glass window in a fight with someone from a rival school.
In grade eleven, my math teacher from grade ten, who really helped me get through advanced math, died after getting the flu.
A year after I graduated, a kid who had been in my homeroom that year, along with two other kids in my school, drowned while trying to jump the ice along the ocean.
Then, a year after that, another kid from my old school drowned, somewhat similarly.