
I'm only assuming something terrible happened that led to years of trauma and hatred built up which I feel bad for the teacher, but it also doesn't excuse spreading your hate as a form of education to your students that will cause them to to act the same way yo innocent students. Also idk how that makes sense in her mind because nothing was stopping chidori students from retaliation we saw random delinquents almost attack karuko for all we know her teachings could've cause a bigger incident cause kikyo students at the start of the series were extremely disrespectful.
I'm hoping the homeroom teacher will at least tell the story to the guys cause the the girls staff trying to keep secrets like yall haven't been teaching these girls to hate on a school who hasn't done anything to them, they deserve an explanation