I have been with the program for the past 6 seasons. I really enjoy my time there. The program is very large and offers alot of oppertunity. I started teaching stand up skiing to physically disabled kids. I did that for a year, and then I moved on to the sit ski program. I like teaching sit-ski better. I suits my personality more, more equipment knowlege and skiing ability are required. I do know that they are still looking for more volunteers, since the passes have gotten so cheap in Colorado, there numbers have really dwindled. The commitments are really not that bad, I teach ten days a year for my pass. In your first year you are required to take 6 clinics to get you going, then you get your pass, and you teach threw the season, either once a week or every other week, depends upon your group. Once you have done your days, the season is yours to enjoy. There are also programs with less time commitment, but they do not come with a full season pass. If you want any more info, go to WWW.NSCD.ORG
As far as teaching days, if you teach stand up, you are typically one on one with your student, for sit ski, it is 2 instructors for every student due to the physical demand on the instructors, lots of lifting, teathering students.