I went to similar school, in this one, they didnt abuse us physically nor mentally, but were like programming us, they taught us alot of religions and always showed the worse part of each one from christianity to islam and judaism..., they normalized alot of shit, but were also trying to make us proper ladies and gentlemen like u said(how to walk proprly heads up, how to talk nicely in a classic way even if a person is angry, ...) , i kept studying in there for almost 10years, and the director picked me and few others (we were picked not only becuz of our grades, but also becuz of how we acted during the small theatres that the school did, how we behaved, talked, and our backgrounds (in my case i was abused both mentally and physically, and lacked familly affection, at that time manipulating me was an easy task) it was like raising a product, or working on a human project..... ) to get into another school (the next level) and said that my parents dont have to pay for nothing at all, not even for the books, fortunatly one of my parents rejected the offer.