The biggest lesson was learning that I needed firm guidelines for my classroom because the majority of the troupe members were really disrespectful in my classes (once a troupe was formed). And when I spoke to them about it, they quit the classes.
They would constantly talk during classes, do other things they'd learned from another teacher and try to tell other students they weren't doing a move right. I told them class was not a collaboration like the troupe and they got miffed.
Never again. I can't imagine acting like that in any classroom setting.

I think you have to decide what it is you want in a troupe then go for it... People will drop out or sign up as they see fit. And you just kind of have to let that be... You decide what type of troupe you want and those whom want to be a part of it will be there. I definitely agree with what was written about not every performer being able to make it to every show.... So keep the choreographies flexible w/ the number of people who can attend..... Personally I have my troupe be a extension of the class, so the ladies have to come to class to be a member of the troupe. Istudent troupe is very leniant and flexible. I have some Really good dancers in the troupe and some whom just enjoy taking class and performing very occasionally.. I have some who practice very regularly and those whom only practice at class.... I personally figure it's a student troupe.... I choreograph so I will continue to find the movements exciting and challenging.... I figure it's a student troupe.... so we perform occasionally and always for free.... If we were charging for performances I would probably have auditions or if I wanted a professional troupe I would have auditions and be more strict and more rehearsals.... However I enjoy just having a student troupe.... much less stress and work for me....
So that's what I think... I've said it before about teaching but the best thing is to be yourself you are never going to please Everyone so if you are yourself then those whom will be Happiest Dancing with you will come to you