When I was at school, that kind of thing had just been outlawed so teachers were bitter about it, but you could tell they sometimes wanted to just lamp some students in the jaw, sometimes justifiably if I am honest though

Most of my teachers were burnt out, bitter and disinterested. There were one or two who tried, my history teacher Mr Salver in particular, I will always remember him fondly for trying, and coincidently, History was the only A I got at GCSE level.
The problem with school is that you go there when you are young. When you are young, you dont give a ****, and regard it as a joke, and if you dont have a teacher willing to call you out and put in some effort to make learning fun, then you will just **** around.
Another problem with school is the social aspect of it, peer pressure and twatish friends.
If it were up to me, state schools would be a row of 300 booths in a massive hall, and each student would sit in their own booth all day, with no social interaction other than that of a teacher, isolated from the other 15 year old dick heads in the classroom.