I'd probably meet with the teacher ahead of time and ask how the teacher handles such students. If this class has been taught for a few years, the teacher almost assuredly has experience with a baseball know-it-all.
It's a high school class, so my guess is it will be a mix of athletes, history buffs, and baseball know-it-alls.
DS tends to do better with older kids so maybe that will help.
Geo--do I recall correctly that your DS has some social communication issues? Do you prime the pump ahead of time, with teacher(s)? If so, what do you use to communicate?
This teacher would not be involved in 504 mtg, I'm sure. I'm not sure how to "explain" DS. Especially because I've only scratched the surface myself, in terms of understanding what drives his errors.
P.S. Did you use the Story Cubes this summer? They are on my wish list. It is a long long list.
