My son has Grade 5 theory, and Grade 3 flute and piano all with distinctions. I have mostly taught him myself, but have had the back-up of his piano teacher. The piano teacher doesn't want to teach Theory beyond this, so I have been talking to someone I vaguely know who is an experienced music teacher. She has advised that Grade 6 Theory will be basically impossible until my son has done at least Grade 5 piano, because he will have no understanding of harmony and will find harmony difficult to learn if he hasn't played pieces containing it. She doesn't know my son and is basing this opinion on her extensive experience. Is she correct, do you think?
Advice please. Thanks
