The idea is neat but there's a lot of pretty basic writing errors in the prose portions - the tenses are all over the place and you're doing a lot of telling rather than showing.
Danny hates those who complain badly about him and his ways of acting. His father is extremely rigorous. Danny's father is never satisfied with the mistakes that are made since Danny is careless and, at the same time, carefree. Danny doesn't know that it was his fault, as he always blames others for his distress.
You're basically just forcefeeding the reader information about Danny here, for example. It's not fun to read cuz its just a brick of information in an uninteresting manner that you're expected to swallow. Think of way to show to the reader that Danny is this kind of person without sitting them down and explaining it to them.
I like the idea of interspersing the documents into the prose - its just that the prose, the actual meat of the story, is really messy.