the best leadership and consistency is actually in the closed clubs where people are determined and want to be there and sacrifice more than just a few bucks a month for using the facilities
This.
You always hear about these insane training methods and hardcore atmospheres at boxing, kickboxing, and MMA gyms. The truth is, you have the few that are dedicated and but 100 percent into everything and the others who are there for bragging rights, T shirt, impress girls, (insert lame reason) like what DJ said.
You certainly have to have structure in a class, an outline of items to be worked, and how much time you will have to teach, practice, break, and practice again. Before each class I teach I make an outline and try to follow it to a T, that way I know my students are busting their a**ss but I am giving time to explain and coach on how it is done. But it comes down to the individual and the dedication and hard work they put in as to what they acheive.
"The hero and the coward both feel the same thing, but the hero projects his fear onto his opponent while the coward runs. 'Fear'. It's the same thing, but it's what you do with it that matters". -Cus D'Amato