It's important to distinguish between types of "prisons". Jails and more specifically, US county jails, are technically prisons if the sentence is long enough vs a short enough term in a proper prison - https://www.hg.org/legal-articles/what-is-the-difference-bet... I believe some of these pictures in the school or prison are county jails, which are not horrific by any means. I could be wrong, of course.