With regard to DeeDee's comments on handwriting - my DD skipped two thirds of what you would call K, into first. Into a 1/2 composite in fact. If her handwriting AND her writing was not the worst in her class, it was certainly close to it. One year later, despite a diagnosable handwriting disability, both her handwriting AND her writing are well above grade level (spelling, paragraphing, punctuation, handwriting, beginning-middle-end, etc). I worked 10 mins a day (school days) on handwriting with her at home instead of doing reading homework, given reading was clearly taking care of itself. The writing development came purely from whatever they discussed in the classroom (and reading of course), I gave absolutely no writing instruction of any kind at home.

I see handwriting and writing as something that you can totally "hothouse" (fairly minimally) and make massive strides with at this age (assuming there is no reason to believe he has an actual problem in this area).