Originally Posted by Cinder
I think it's ridiculous to say that people don't usually improve if they take group lessons.
I don't think anyone said that.
But the speed of the improvments/progress is VERY different in group vs private.
Think about it this way: 4 students for 1 hour get 15 mins of attention each (even less, because indeed you waste you time waiting while every person is done with jumps, or leg yield, or canter, or whatever else). The usual length of the private lesson around here is 45 mins. So you are getting at least 3 times more attention from the trainer (and no wasted time what so ever). Now if you compare the price private will be cheaper vs what you actually get as a service.
BTW, I completely agree it depends a lot on instructor. With not very good instructor it doesn't matter if you take private or group - the progress will be minimal.