My DS8 was a little concerned about this when we decided to SA him to 5th for math, but the reality was, after a day or two of very basic questions from very few children, no one cared or noticed at all.

We did exactly as Aimee suggested and worked out scripts for him. The reality is, he found it much easier to respond to the kids, than I ended up finding it was to respond to a couple grownups who found out via their kids.

Cat