I think a more diverse student body, likely one with a wide range of parental income and possibly including some kids who are members or gangs or is just more likely to have a few actually violent (,mentally ill, narcissistic, borderline personality disorder, etc.) kids, with a higher student to teacher ratio, will be much more challenging than a small high-school with 400 kids that more or less fall into "middle class and above with a spattering of low income."

EDIT: found an interesting "day in the life" article by a self-labeled urban teacher.

https://theeducatorsroom.com/a-day-in-the-life-of-a-teacher-...