I checked out the video, "What is a McDojo?" and I think it hits the nail right on the head when the video says that a McDojo is a martial arts school that puts quantity of students over quality of the material that they're teaching. I will say this much, the first school I was seriously involved in was not a McDojo, at least not by that definition, since not all class sizes were large. Sometimes we might've had fifteen or so students in a class which could be about average in terms of class size but sometimes we only had five or six students. So it was not a McDojo, where I trained.