H.J.
I have a 4 1/2 year old with that same problem. It actually took me TELLING the teachers what to do. You need to have a sit down with the teachers and possible special ed instructor and explain to them your concerns with the school deeming him as illiterate and math incompetant. I have my daugther in an early intervention program. Have you begun to medicate your son? If so then you should explain to the school that it could take as long as 6 months for the medication to take effect. Im sorry you are going through all of this especially with all the heartbreak you have had to endure. I myself have lost a child not to sids but to being hit in a caraccident and having a stillborn. Don't let the school bully. They are there to educate your child. Remember without your child, they wouldn't be there. Try to come to some sort of agreement with them. Hope this Helps!
H.