Since I'm limited by having to transport the work, I'm PLANNING on only starting with my 6th graders, about 60 kids. We're also going to start easy, with small flat 4 inch square"tiles" that they will make simple designs on the top flat surface and then paint after they've been fired the first time. I have several plastic storage containers with 3 drawers, that I can use to try to safely transport them back and forth. (will wrap them in bubble wrap or soft towels).
I'm doing initial research to see if this is even logical/feasible! I really want to do clay with the kids. I might have to use one at the local HS. (about 4 miles away from my elementary.)
Thanks for responding!