As teachers, our responsibility is to change with the needs of our society. Yes, to multiculturalism, and art research and art criticism and aesthetics. I suggest simplify the lanquage in teaching art. For example, broadening the definition of the word 'artist' by allowing the students to define what that means. I often hear musicians and film makers refering to themselves as 'artists'. Ask questions of the students and assume they know about Picasso, because well, isn't he much like the 100th Monkey?
Anyway, questions to provoke creative thinking like describe a modern filmmaker who is also an Impressionist?
However, it will always be important to note those persons that have been glorified in the past, such as important fiqures like Leonardo..
But what about..'Outsider Art'?
I suggest in the making of art, let the students do what they want...but suggest to them books about technique.. Choosing helps the creative process.
Demonstrate aesthetics with highly charged films with aesthetic value, simply because one must experience aesthetics, so therefore film is the perfect example for a class room.
Make them talk about art in their own way, then gradually teach the 'methods' of good criticism. Creative people learn by doing.