Today ds1's sweater was covered in paint. It was quite obvious that he'd been wiping his fingers on his top. There was paint on his trousers, too.
When I asked him what happened to his overall, he told me that his teacher says that Y4s don't need to wear overalls, and that none of his classmates wear their overalls.
Long-sleeved art overalls are part of the required uniform list.
If it's not finger-marks on his front, it's paint-streaks on his back where his classmates have accidentally or deliberately waved their paintbrushes around. A splash of paint or glue here or there - OK, that's part of the acceptable mess, and I wouldn't expect them to put on overalls every time they pick up a glue stick, but for fully-fledged art classes?
Well, AIBU?