Lol, impressive. My teachers all like me as I shut up and listen, unlike the rest of the class. Mainly the only reason I lose points is due to laziness and derping, though I've never lost 5 points due to a missing letter. But why did you only get 95? If each letter is worth 5 points, it looks like you should have gotten at least over 9000 points. :3
Doesn't really quite work like that, but basically the higher your mark is, the more marks you lose for smaller things.
Like if I already had a 70% before spelling errors, I wouldn't lose 5% for each spelling error I make.