Thanks for your comments. We don't have a 504 plan - the school said they could take of everything without one. He does have a health plan on file. I like the idea of asking them to have the non-cooking part of the cass taught elsewhere. Then we wouldn't have to worry about what the other classes are doing in there.
I agree whole-heartedly that kids should learn to cook. I think it's even more important for celiac kids to learn to cook! We have been teaching our sons at home - I don't think he will be missing anything by skipping the school cooking section.
Here is what the school has offered so far:
The guidance counselor suggested he could just take another class (which is my preferred option!). But then the principal said she would like him to take the rest of the class and he would be excused on days in which the class is cooking. That's what is in his file right now. I am concerned that he also needs to be excused on the days other classes are cooking, too, for the reasons many of you mentioned above - gluten in the air. I pointed this out but have not heard any more back. Maybe I just need to contact the teacher and see how many days kids are "cooking" and how many they aren't. If he's going to be pulled half of the days, he might as well take art or music. If it's just 2 weeks, then that's not so bad.
Honestly, I have heard this class is terrible (cooking is only one small part of it), and thus I think my desire to figure out a way to make it work is not very strong. I don't think he would be missing much in terms of curriculum, and then we wouldn't have to worry about him getting sick all the time.