Is he in first grade? Did they give you a percentile for reading fluency?

It does sound like dyspraxia/dysgraphia assessments would be in order. Did he reach speech milestones on time as well as motor skills? My dyspraxic DS had problems with combining words and forming phrases--he was almost 30 months before he formed phrases on a regular basis. Now that he is 6, his speech is still slow and seems dysfluent. Articulation is greatly improved and almost all his speech is understandable, but he still has problems with Th and R. He also has problems with most gross motor skills like hopping on one foot, catching balls, etc. You could do a private OT/PT eval first. They probably can't diagnose anything but they can give basic motor skills tests. You will want fine motor tests that are timed and purely physical (rather than having mental components). DS did just awful on something called the "Grooved Pegboard" which was timed and involved screwing pegs into a board, but there are other assessments as well, that go into more detail. You will want to look for evals with subtests that are purely physical, like manipulating small objects. A lot of high IQ kids will do Ok on handwriting or copying tests because those involve a mental component. You could start there and then depending on the results go for a neuropsych eval.