As far as I know, the best results are registered where the student feel most safe and relaxed.
But, there is the whole problem of being sat down at the age where you are most physically active, and learn things you cannot at the time see the idea of.
That, among other things, is why teachers have to be so damn good!
I do not envy them their jobs. I would like to teach, but not to a captive audience. Rather to people who want to learn.