This is very interesting, and well-written. You're very good at painting a picture, letting them see what it is.
I really did not expect the MC to be Ron - and it was a pleasant surprise when I found out. I enjoyed that.
The only thing I could say about this is that at my school, if you broke another kids nose and threw them down the stairs, that alone would warrant expulsion.
However, this was a really enjoyable read!