Eagle (KEGE) is IN the mountains at 6500' with 14,000+ peaks nearby. So if you are flying out of there, chances are pretty good they fly the mountains. Ask them what all they teach, do they have a syllabus? Ask them if they fly patterns or just do straight ins (patterns are more challenging and fun but both work). The items I can think of is leaning for takeoff, shortfield takeoffs, canyon turns, full power runups so you can be certain you are leaned for max power, ridge lift, slow in the updrafts, fast in the downdrafts. Do they have access to a grass strip? I don't know of any public ones in that area. If they are in Eagle, they are probably pretty good. Good stuff around there abounds. But call and discuss.