should there be fireworks

Here in the UK we have bonfire night, the 5th November, I will not go into the history you can find that in lots of places. We have fireworks to celebrate this piece of anarchy from are history. This is not about that directly but it is a bit about anarchy, in a small way. This is a small piece on  should I give a f**k that my 15 yo has fallen out with his math tutor. My X-wife phoned me from another country she is visiting to say she had a message from school about his apparent disruption in the maths class and his teachers feeling of his disrespect for her. Now, this is not a failing kid with behavioral problems but he can be belligerent at times and he does get a bee in his bonnet about certain people. So anyway, my X wants me to phone school to discuss. So why is it that my first thoughts are why?

Why can't this teacher sort this. He is not throwing tables about, he has not foul mouthed at her, not threatened her and as far as I can see he is not under-performing. Put him on report, detention maybe, surely the school has tactics for belligerence or has it become so well mannered that you need to pull in the parents when the kids have attitude. Is that not something that 15 yo's have as part of the DNA. Has the norms shifted so this becomes a parental issue or are all the other kids really nice. Maybe it is out of the norm for him, so she's worried he is masking some other deeper ills, he is after all from a broken family, its a cry for help! 

Anyway, I phoned school and left a message so I await a call but what am I to do?