Also as I said above. In a typical technology classroom at my workplace you could not fit in 40 children. Of course that's a problem with school design but nothing that can be changed. Science labs similar. Changing rooms in pe. And actual space for kids to move around at lunchtime even with split lunchtimes. And the whole education system becomes less personalised and the teachers will not get to know your child . It's hard enough as it is when with 30 children in a class you get less than 2 mins per child in a 60 minute lesson.
Anyway none of this is out problem. This is without even starting to talk about the police, fire service, nhs. They are wanting more work out of everyone, particularly public sector, and most people are stretched to their limits and beyond.
Also. There is a lot that teachers do that parents are not aware of so difficult to judge by just talking to your child and looking at their books etc