I am more than happy to have those conversations with parents. More than happy.
If a parent asks for a meeting, I'll accommodate. Phones me, I call them back. Catches me on the playground for a quick chat, no problem.
I'll also admit if I've dropped the ball, forgotten or not noticed something. It's my job not my life and we all make mistakes. It happens. And I'll rectify it.
But being threatened with violence? Shouted at? Expected to achieve things that I'm completely unable to do?
And I have no issue with parents who want to know what they can do to help! God, if only!!
And, when they do ask, I tell them. Some ask for extra homework to support. None of that work is ever completed. Most of the time, it's not even collected from the office where its agreed I'll leave it. Some of them don't even do the basics like reading with their child twice a week. In a lot of cases, parents asking for more is about them asserting their authority and not a desire to help their child at all.
There are many good and supportive parents on MN. I read threads where a parent worried about being THAT parent and I'll tell them to go ahead and speak to the school. You don't become THAT parent by advocating for your child. You become it by being unreasonable in your demands, rude, aggressive, threatening and unrealistic.