I'm learning my scales dutifully. I have Bernhard's approach printed and sitting by the keyboard. I'm still on HS, 12 scales, correct fingering patterns. I have to admit the usefulness of learning scales on piano is not real clear to me. Granted that I've only been taking lessons a couple of months, still I've not come across anything in the music that matches scale fingering patterns. I don't know any piece outside of Joy to the World that has a single octave scale, and none that have two. I've played trombone since 1962, and scales have direct application. There are choices of fingering that are key specific, and learning patterns for each key greatly improves technical speed and sightreading ability. It is not yet apparent that the same is true for piano.
Where did you find Bernhard's scale approach?
Just for the record, Mozart IS SCALES!!!!!
In some sense almost every melody could be reduced to a few building blocks such as scales and arpeggios or part of them. Indeed one could see scales in almost every piece. So, examples could be infinite, but as conspicuous ones I could quote many Scarlatti sonates and Chopin's and Field's Nocturnes, ceartainly plenty of scales.
Hmm, it could also be Mozart music is scales.