> It's telling that the principal use case of in loco parentis is schools - maybe it's time for that to end universally as it ended in higher education.
You're not really proposing anything in its stead, though, as far as workable systems of schooling.
Schools owe it to their charges to make it a safe place for students to be and learn: after all, they're legally compelled to be there and most parents do not have other options. I believe understanding the totality of circumstances facing kids, including things that didn't happen at school, to the best of their ability, is necessary to make this work.
I suspect you might have some views that the student should "tough it out" or "solve the problem themselves". Adolescents do not have workable ways to deal with pseudo-anonymous abuse crossing over into environments they can't escape. Even adults would suffer badly under these pressures. Yes, the legal system is an option but it's not very accessible to students and not well-suited to address these kinds of problems.
I'm a teacher at a small idyllic private school. (view don't represent employer's). We have the benefit of a mostly supportive parental community and selective admissions. Today's era for youth is a less violent and more understanding one than when I grew up. Even so, the pressures and abuses from 24/7 engagement with peers through social media are huge. It's not surprising the outcomes overall in our society are trending bad.