Answer: I understand where your worry comes from. I am a psychologist and I know there is a lot of things that need to change in order to prevent it.
Step-by-step explanation:
The school is a system and to change a system, you need people that are open mind, with knowledge, and with the intention of making a true change. Also when you are in a school you have students that come from different backgrounds and the way they act can affect others.
The thing is that in order to prevent it you need a committed group of people focused more on the mental health of their students. We need to remember that mental health is something that still has its stigma and there is a lot of people that are psychologists in the schools but dont have the ability to help those who need it. Right now what we can from our position is to try to see the signals and give support. If you see any friend sad due to any situation related to school bring support, it will be helpful.