I really don't think many American gyms do this, in fact I have never heard of it from any of our almost 4000 members here.
Quebec is a very large province and gyms are often very far from kids homes. Most of our coaches are parents and have their kids off school in summer and therefore do not want to be driving mega hours for training a few hours. I do know of quite a few other gyms in our region that train the same way we do. Only our head coach/owner works full time in the gym, for the other coaches it is purely part time work, though they are all very well qualified through our stringent Canadian system.
I think this is much less common in the large city gyms, who have lots of kids, coaches and classes.
Due to the lmited hours and lack of summer training our girls rarely get past L6/7, just not enough hours to progress and time off just kills progress.
We do have a summer camp at the gym that provides 15 hours a week training, but the cost is so high it is out of reach for many families. Most of our parents are not aware that the system is bizarre so it's never been an issue at all. Girls have never left because they want to train more!!
In an ideal world I would prefer year round training, but it is not an option, and I wouldn't drive the 75 minutes each way to the nearest club that trains year round. My girls will never get far, but they still get all the pleasure that gym brings, great friends, wonderful role models and a lot of fun.
