I'd add, a major problem is the expectation and indeed pressure to achieve the same, if not better, results than the previous year every year despite ever more difficult circumstances.
My students' books have been scrutinised this week and have been criticised for their declining state of neat and pretty. It grated a bit.
BUT: in every class, 1 in 3 children doesn't bring a pen. I handed them pens for as long as I could, but now I'm out (because not everyone returns the pen, some take delight in taking the pens apart etc) and I have been told we don't have money to buy more. I am not one of the martyrs paying for my employer's supplies myself, so kids are given alternatives (pencils, different colours of ink), but the expectation is that they all write in black or blue, so my books are not written in in the right colour.
Fewer than half the kids bring in a ruler. I had 10 rulers in September, now I am down to 3 (not returned or willfully snapped), so tables are often drawn free hand and look a mess. See above, I don't buy for my employer and I am being told there is no money to buy in more.
I am lucky if one kid in 30 has a glue stick. Mine ran out a while ago, and, again, no money for more and I refuse to buy them myself. So sheets are loose.
I have a child in Y11 who still cannot spell their own name, let alone any word over 3 letters. I have no support in their class, which is 20 students large. Since I cannot provide effective one-to-one and teach at the same time (I support them when I can, but I have 19 other students to manage and support; there are only 2 stusdents without SEND in the class) so their book has half-written work. Not good enough, apparently.
The expectation is that every child's book is pristine, but I don't get supplied with the tools to do my job. I push back, of course, but it falls on deaf ears. Others quite rightly say eff this and leave.