Our family is also moving to the Zug area, and I am looking for a ballet class for my daughter, too.
I asked her current teacher, who recommended going to the RAD website. I did, and there I found listed a teacher at ISZL, and a teacher in the Zurich area.
I hope this helps. If I learn more, I will return here. And if you find one, I'd love to know about it!
I found this on another thread; it looks promising:
http://www.art-kunst.ch/pages/about-...inbow-eng.html