UniPop depends, all teachers I had were trained, but not all were the best. That's what you get with free schooling. If you shop around, change classes, ask for trial class etc. (I used subbed classes as quality check and actually found a good teacher this way), you can end up with a really good course for no investments. Ecole Migros can be the same situ, a chance you end up with not so good teacher is the same, but you pay a couple hundred franks on top. I wouldn't disregard UniPop at all, have had some good experiences, pushed me into C level (but you cannot just expect the prof to do all the pushing, I got 2 language exchanges a week on top, intensive summer courses - 7hrs a day, etc.).

Integration courses offered by canton or Red Cross are not the same as UniPop sometimes (depends if the area has UniPop), UniPop offers all kinds of courses, majority of students are actually local.

In Zug, there are a few subsidised by the Geminde courses available for new migrants (beginners levels). I don't think they are intended for people on expat-packages, but anyone can sign up.

The RAV in Zug seems to pay for language courses in Migros - my Saturday morning course was full of RAVers and when they found work the class became empty.

Here is my experience in learning German in Zurich. I tried a cheap course from ETH Zurich first. It was extremely cheap. However it didnt work for me. I moved to an expensive course in the city, which costs me more than 80 francs per week. The teachers are perfect and i passed the german level b1 after one year.

To echo the given view, my wife signed on with the RAV in Vevey and it is as people have expressed: you sign up, you look for work and if, in the opinion of the advisor, your lack of french is holding you up from work you might - possibly - get given a course but it is not a right and swanning in expecting to get a free course next week isnt going to happen. First you must prove you are looking for work and it is your lack of french that is holding you back.

Mike