I don't know what to ask the dr, but if you want accomodations at school, you're going to need an IEP or a 504 plan. The school might accept your report to create an IEP (if the dyspraxia affects his ability to learn) or they might want to do their own tests. If you just need acoomodations for things like more time to write or filling in bubbles, you might just want a 504 plan. For that, you'll need a diagnosis in writing from the doctor, maybe with suggestions for accomodations.