We don't have enough information. As long as she kept her work in school separated from her OnlyFans, I see nothing wrong with her having a second job.

This sentence is ambiguous:

Among them is allegedly posting material on public social media accounts that "involves the sexualization of the school environment."

Is this implying that she took any of her OnlyFans pictures while inside the school? That wouldn't be okay. But what it is referring to, as she alleges, is that she took pictures while wearing a school uniform, then the only thing that matters in my mind is whether it was a generic school uniform or the specific uniform used at the school she worked at.

We are generally very hypocritical in matters surrounding porn and sex work.