His group lessons are usually weekly things. He will do an initial group cattle call at a new location with a bunch of kids showing up. Then a portion of that group will start group lessons and one mom will be recruited to do the collecting and paper work in return for the lesson being free. He is very good at teaching the stepping style pitching and his kids can spin it. From what I hear his top students will give him credit for a lot. This guy has, or had, so many students he was hiring instructors to help him. So if anyone has had some level of contact with 30K students, it would probably be this guy. It was over a decade ago when I observed him so this information may be old, but I can vouch he has instructed, to some degree, a LOT of girls.