It's 11:30 on a week night. Next door are having a teenage get together in their garden. Under our bedroom window, where my toddler is just about staying asleep. It's LOUD, the music is shit and I'm knackered. Grr. There's no easy way to 'pop round for a reasonable chat' when you are in PJs and very disgruntled is there?! No. I thought not.
Well - ds1 has just finished his Highers, and ds2 has just finished his Standard grade exams (Scottish yr 11 and yr 12 exams) and there is no way I would let them have a party on a weeknight that was loud enough to disturb the neighbours.
It did stop by 1am. They turned music off but sat round talking under the window for hours. Yawn. Wasn't overally pleasant to DD when she woke at 4:30am... But hopefully you're right and it was a post GCSE one off. We just moved in so we'll have to wait and see!