We have gone to this one for Puppy Kindy and a Young Dog Course. They have all kinds of specialized classes too.

http://www.hundeschule-capraro.ch/

You can see Capraro in this list:
http://www.kynologos.ch/content/links.html

(For those looking for a well-run puppy playgroup,
the Praegungsspieltage in the list above is another good one we've observed and it's nearer Zurich.)