It's been a while since I posted but thanks for the new thread.
Crazy - that is exactly the sort of thing my ds (now 19) would do. On the night before he went to Uni in September, we got out his 'folder' where I keep all school reports, letters from school etc. The demerit list was the best! Searching up 'boobies' during an assessment, eating copper sulphate during science and climbing out of the window for a 'short cut' are just some examples. Even in Uni he has been in trouble and had to pay a fine. I despair really. He's actually a really nice guy but also does not see the consequences of his actions!
Since dd's period of SI and mental health woes, she now seems in a much better place 
She has decided to drop Art A level and concentrate on doing two - media studies and sociology plus an EPQ. I am so relieved tbh as she is not the most academic and also has maths GCSE to resit. She may also do an AS level next year to up her UCAS points, she's mentioned business studies, but we'll see how she's going.
She has talked of going to Uni but now wants to work for a couple of years after A levels and see how she feels. She thinking fun things like travel rep, cocktail waitress or chalet girl!
Living in a big city (we currently live on a farm in the middle of nowhere) and no essays to write.
I honestly feel like a weight has been lifted off her shoulders (and mine!). College were fine about it all and have been really positive. I hope it will mean less stress and grumpiness from her and it will give her time to really focus on the two she's taking.
Sorry to hear about all the positive cases and self isolation going on. DS has had it at Uni but the rest of us have remained clear so far..... I am amazed my Year 8 dt's haven't had to SI yet tbh