I read Chinaza’s response. I agree with her point about how flunking student to give them a push is not always a great idea, and while some might react to it with better work, someone who is not doing well in and outside the classroom could dig themselves a bigger hole. I also agree that an interesting story with with grammatical mistakes is better than having a boring story with strong grammar.
Every school’s teaching is different, and everyone’s thinking is different, therefore, every piece of writing is original work. Research is also important. If I am a big fan of sports I would probably write a better essay than someone who does not follow sport, because of my personal experience with sports is a good one and I spend a lot of my time watching it.