I think this issue is highly dependent on the teacher. I do privates, because I don't have a partner at all. I also go to advanced tech group classes. And I recently started returning to my pro's beginner beginner "partner" classes by myself where I can practice my more advanced technique in a slow way and learn lead steps (I am a follow and there are never enough leads). My instructor comes around, even in the beginner classes and does corrections, however briefly and I learn a lot thinking like a lead. It is like a practice with a correction now and then and is good value. I find that in learning anything new (leading), there is a period when the automatic info (following) might degrade a bit for awhile, but when you eventually integrate the new with the old, it makes both better.