I will be doing a raku demo next week for a chemistry course at SAIT (Southern Alberta Institute of Technology). The teacher has arranged for a field trip for her class so that they can witness oxidation and reduction reactions first hand in a fun setting (albeit a bit smokey and stinky).
Dave(the studio owner), hates doing Raku, but thought I would like to do it. I don't really like the flashy raku, I am drawn more to the simple white crackle glazes contrasting with the blackened clay body, but for this class, I think the iridescent copper sand type of glazes would work quite well, as they show the reduction quite nicely. I will take some pictures of the stuff that comes out of the firing and post them if there is anything really nice.
These pics are a pot that I raku fired last summer, and I was quite happy with the result.