the OT report says no fine motor concerns and writing problems are not motor based.
I don't have much time to reply at the moment, but there are different types of root causes of dysgraphia - one is fine motor, the other is related to visual motor integration. I don't have the knowledge to tell you if either of these is an issue here, but fwiw you might want to google "types of dysgraphia" or something like that and see if any of the symptoms of a specific type line up with what you're seeing in your ds.
He hates to write, but he will happily draw and solve mazes for hours.
This really isn't atypical for dysgraphic children - my ds is a talented artist and can draw amazingly well. He's also able to take one look at a complicated maze and draw the solution with no mistakes. He can't write. There are very different processes in the brain controlling each of these - drawing is free-form, figure it out as you draw, every drawing is new and unique, the pencil rarely leaves the paper while drawing. Usually when you're drawing your head can be totally in it and doesn't have to be thinking about things like spelling, capitalization, grammar etc. Handwriting involves (in neurotypical children) the development of automaticity when learning how to form letters, and when that automaticity doesn't develop, forming the letters takes up all of a child's working memory to the extent that they can't focus on those things.
My ds also has Developmental Coordination Disorder... and it has symptoms that overlap with ASD.
Re asking for further evaluation etc from the school - one thing I'd seriously consider is seeking a professional evaluation outside the school. With the testing and data you already have it wouldn't have to be as extensive and costly as a full eval, but being able to review the results and ask for recommendations from a professional who has no ties to the school might be helpful both in terms of reaching an up-to-date diagnosis, and in terms of understanding what therapies/remediation/etc could be useful, as school evaluations are going to somewhat limit that information based on what they are required to provide and what will help in the classroom at this moment in time. An outside professional can help you provide a long-term plan and understanding, as well as provide references for outside help should it be necessary to add additional remediation outside the scope of what your school district is willing to offer. Please know I'm not knocking schools at all in saying this - just think that sometimes when a parent has unanswered questions an additional review from a professional not tied into what the school is capable of offering can help with clarity and a plan forward.
Best wishes,
polarbear
