An Update!
He was not sent to the K class! He was allowed to stay and enjoy his class-mates presentations, and is going to do his presentation (we worked on his box this weekend) today. I'm not sure yet if or how much he'll be marked off for not having it Friday, but it appears the teacher handled it all very well! (Not sure it that was partly due to my email or not!) We have a meeting planned for Friday, at any rate. I am going to see if I can get both teachers on board to review/sign off on a daily planner for him.