For instance, when someone describes going to school as “traumatic,” they often simply refer to it as a negative experience. This is not to say that everyone who went to school never had a traumatic experience; however, some individuals appear to overuse the term. Another example could be considering being lightly pushed into a locker as “traumatic.”
If OP isn’t American, school shootings probably aren’t something to even consider… My thoughts go towards being treated poorly by educators more than anything. Bullying from other kids can suck, but in my anecdotal experience (outside the US) the lasting and impactful traumas stem from how teachers and staff deal with the kids.