Okay, let's see if I can ask this question clearly. I went online to look at some of DS10's essay submissions for his online Algebra I course and I was surprisingly impressed. Surprising because I am so rarely impressed and also because I was only looking at the problems where he lost all or part of the credit. It turns out that he forgot to complete every part of the problem or he made a careless calculation error. Anyhow, I am not sure why he felt it was necessary, but in addition to showing the solution step by step, he verbalized the explanations for each step. It was very well-written and complied with punctuation, capitalization, spelling, etc.
His writing has always been above-grade level (straight A's in GT classes) and he can crank out an "A" level paragraph response to literary questions in no time (usually one of the first ones done) but he is sometimes prone to the occasional error in punctuation, capitalization, spelling, etc. Although he has always been good about showing his work and even verbalizing his work in math (required from 1st grade onward), they were never this elaborate and usually messy looking. He is not dysgraphic although he has very bad handwriting so I did not expect that typing would improve his writing so much.
Is this common? Is this kind of like how listening comprehension is normally a year to a few years ahead of reading comprehension?