One of my pet peeves is when I listen to a transfer student play and they do not check their bench or sitting position. Also, they do not understand anything about the forearm and hand position. I think that I react because I had less than stellar training when young and it took years to change my technique. I am a stickler about students learning how to play correctly, and they know it!
Nowadays, no one should practice for 8-10 hours a day. The facile playing of scales up and down the keyboard was to build the fingering and patterns into the hands. I would rather a student learn key principles of rotation, in and out, drop-lift and basic Taubman and Entrada principles. All of this I teach in small amounts to my students and I have seen tremendous benefit versus heavy technical practice.
In my next blog entry I will go further into my scale practice.