Addressing the slow processing speed question:

I do not know why that is with reference to his work unless it is that he is working out things in his head first. It may also be a touch of perfectionism. I have asked the psychologist for more information on that but she just went on vacation so it may be a while.

As to what his teacher says...from his report card:

First trimester:
"...His writing is currently on grade level and I can see great improvements through conferencing with [TW] on personal stories written in class. He often works quickly through the material, I would like for him to work on slowing down so that his handwriting might improve and so that he does not make simple mistakes from his rushing."

That's not all she wrote but it answers the pertinent "how fast is he working?" His handwriting is awful but...so is mine; the brain is just working way faster than his hands can process.