Here's the only thing I've seen is that sometimes they instructors aren't very assertive when someone who is lower skill gets assigned with people that are more skilled. The only way to get around that and when you can tell they're going to put someone in your group that is below you (substantially so) is to speak up. Now, I can totally understand a teenager not doing that. They'll just ride with it but then be disappointed.
Case in point - first time I went to Crested Butte, I signed up for the Steeps program where they basically guide you around the mountain, show you stuff off of the T-bars, etc. Well, they stuck this guy in our small group and the guy was looking forward to skiing his first black. Wait... WTF?!!?! Our guide wasn't really saying anything or doing anything about it and so I had to go to the guy assigning instructors and say, "hey, this does not work" until he assigned him to a different group. Almost happened to me another time at CB. Mind you, I think CB has a lot of excellent and talented instructors but sometimes I wonder if the people who run the ski schools try to maximize the number of people in a class... you know, ROI and such.
Can't say that I saw that at Taos but have seen it at CB which is a Vail resort.
Oh... the blues at Stevens are b-o-r-i-n-g