<human>: Can you condense the text into three sentences or less?

This is my first time posting so bare with me.

In school there's this trouble maker. Let's call him J. J is known for giving 0 fucks whatsoever. This kid is a huge trouble maker and a lot of people don't feel safe around him. To give you an idea, here are a couple of things he's done:

He sexually harasses girls during PE. Always forcefully grabs and hugs them, hollers at them and calls them dirt words.

He brings unsafe items to school. This kid brought a, I shit you not, a fucking blowtorch to school. He's also brought his knive collection (I'm not talking about kitchen knives), and even has brought his weed to school (he smokes it before and after school).

He's very strong and has a lot of friends of who are much older and stronger (they ganged up on a kid and put him in a headlock). 

So why not just tell administration? I tried telling them about it, but they give NO fucks. The response I've gotten from them is always the same "We understand J has a history of these doings. I've worked with him and will closely keep an eye out on him". I honestly feel extremely unsafe around him and don't know what to do at this point.
<bot>: Psycho kid who's insane strong brings a bunch of dangerous shit likes knives and blowtorches to school, staff gives 0 fucks, don't know what to do