QUOTE(corenfa @ Jul 8 2012, 07:06 PM)
My friend who is an adult beginner said that her teacher requires half an hour almost every day (as in, he told her he would teach her only if she would commit to that practise).
As a horn student (maybe I was around Grade 5 then) my teacher said she required one and a half hours a day but that may have been because I had a lot to catch up on. I kept with that amount of practise all the way from there up to post Grade 8 (ish - I was in the US then and they don't do grades but I judge it by the repertoire I was working on then).
While I disagree with my pupils who say they have no time, specifically "I can't practise on such-and-such a day because I have gymnastics", I can see that many could not fit in more than an hour's practice a day, even at higher grades, when they are also having a hour's homework and a private life to fit in. And if their dometic situation is such that other people are put out if they are to practise - those people whose piano is in the same room as the television and there's no way to alter this, and there are other members of the family who don't really want to spend more than an hour listening to someone practising the piano rather than watching TV (for instance) - they're rather limited not by their own willingness but by their lifestyle or that of their family.