From a teacher:
Your child is not infallible - don't come storming in when they tell you something, it's very possible you'll be wrong.
Don't send your child in in shoes they can't tie themselves.
Don't send your child in with unlabelled items and complain when they get lost.
Don't be late to pick up your child and complain when I send them to aftercare, as you'll be charged (and I give ten mins grace).
Please read the emails and notes that get sent home.
Remember that we have a classroom full of children to teach, not just yours. Your child is no more important or deserving than any other.
Do not expect instant replies on email during the working day. If you've got an urgent message, ring the office.
To management generally, I don't work in the UK (thankfully) so my exposure to bullshit paperwork is quite low.
Regarding minimising workload, I think schools need to embrace a Good Enough mindset. Nothing can be 100% perfect. That's ok. I have some bad lessons, some amazing, the majority are good. But I think that schools in the UK need to look at reducing paperwork demands and encouraging teachers to simplify their workload, to give themselves a better work/life balance. I don't work in the UK, so I'm not too exposed to bullshit paperwork.