Bernhard,Thanks so much for your message; this is EXACTLY what I was looking for.
1. Posture - I agree on all points and his teacher tries to drive this home during lessons. I don't know if it is an age thing or stubbornness that prevents him from listening and doing as said.He is too short to reach the floor with his feet while sitting on the bench. We should have brought a cushion or something to raise him to the proper height.
2. Using too much finger work - I don't really follow. Could you elaborate?
I do very much agree about his slouching wrists and fingers pointing up in the air. His teacher tries to correct this (without total success) each week during his lessons. His current teacher is his third. The first was a schoolmates friend, who lived down the street and she started him on the Alfred prep course. After a few months, she moved and recommended another friend (with no real teaching experience). She worked with him ~ 3 months until I found his current teacher. I am so glad I found her because he might still be playing that AWFUL Alfred stuff otherwise. Do you think his teacher is having problems correcting his posture and some technique's due to the first 5-6 months with the other teachers?
Additionally, a part of his daily practice schedule is Hanon and Czerny. I read a lot of mixed opinions regarding the usefulness (or lack thereof) of these methods.