Are you under the impression that most teachers run every private lesson for every student the exact same way? If that's what you think, you are not being trained well. A good teacher designs his private lessons around what each individual student needs and wants...or rather, a balance between what the student needs and wants since those two things are not always in alignment. To me, a good teacher who wants her students to progress evaluates the student and their goals, then helps them understand what they need to do in order to meet those goals. Sometimes that involves drills, but you go about it in a way that satisfies the student (unless A. the student won't be satisfied because he's so intent on what he thinks he needs without regard for those more experienced than he or B. the teacher doesn't really want the student..which could include A). You can often sneak stuff into a student's education without them even knowing it. A lot of social dancers think they "don't need technique" because that's only for competition. BS. Everyone needs technique. So, you slip little bits of it here and there into their education, presenting it as a necessary piece of the social dancing puzzle, and they learn to be good dancers despite what they think they want/need.