Hell yes!
Everyone who owns one of these things should take one. No matter if it's a higher speed school, or autox, you will learn valuable information on how to handle the car on the street. I autox mine every chance I get. After initial hesitation (due to fear of wrecking car), I went to PDA schools at Pocono last year. Between these events, I have learned how to handle the Cobra, and what the Cobra will do. I feel much more confident to handle any emergency thrown at me on the street. Besides, the driving schools let you push your cars hard, and that's what these Cobras were meant for.
Steve