I never have been a fan of main streaming Downs Syndrome kids. I know that is not a popular view point but............
If the kid did not earn the letter, he should not get one. His parents are to blame.
I wasnt either until I have been around 3, spanning a pretty long while, who really did quite well in a mainstream school. More importantly, the OTHER kids learned a lot. Often the LRE law goes too far, but i guess the spectrum of Downs (and other) can factor in. It isnt all the same.