the best version to show a class

The best version to show a class IMO is from Kultur Video produced in California.
Why? The language is Americanized which adds clarity, it is in the style of the 16th Century (not some operatic tribute to Burton and Taylor ala Zefferelli) and with this in mind the acting is laugh out loud funny. This is a staged production and it is in that style. I have not seen better. The Comedia techniques also appear in this as with the Marc Singer show which my library has had for years.

However this is the one to get for students:

http://www.worldcat.org/title/taming-of-the-shrew/oclc/049335615