Think about all the teachers teaching at the good conservatories. You may think if they're good enough to be teaching there, they must be really good... but...
... some of them have a performing career they put in front of the studs, so they constantly cancel classes...
... some of them had some twisted fate that didn't allow them to be the performer they'd like to be and they have a cynical attitude to everything that certainly isn't helpful in teaching...
... teachers who hold things to themselves because they don't want their studs to be better than themselves...
... teachers who discourage the studs from learning harder pieces because they wrongly believe the studs aren't ready... (i think that happens all the time... )
... some teachers have a few extremely talented students, then they look at the rest and treat them as trash...
If we talk about the neighbourhood teachers, that's even more interesting...
... some of them only passed some amateur piano exams and use that as a proof to be able to teach! some of them might indeed be not bad a teacher, but the rest...
... some of them are conservatory stud' parents!!! They don't even play the piano!!!!!!!!!!!!! MAN! and they teach kids... and I'm surprised that they have many students...
... moreover, some of them aren't even conservatory studs' parents. Their playing is minimal. they have just listened to the lessons their kids had and start teaching!!! (Once I was practicing at school - a biz school, my friend and her mom walked in. My friend introduced the mom as a piano teacher. So I gladly asked for her suggestions on my playing. She was like, "Oh, please. I wouldn't dare! I only teach kids... and what was the piece you just played? (it was a well-known piece) " I almost said to her "Stop ruining the kids then!"
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hwww... nowadays, finding a good teacher isn't easy!
Yeah, the difference between a good and a bad teacher is always obvious (to those who have played enough piano to tell.) It can be on music itself, or on the education aspect (including the teaching approach, attitude and mental health (lol), etc....) and there ARE bad teachers without question.
If we just talk about the difference between outstanding teachers and super teachers, I do agree with Counterpoint on the "positive cycle" that gets super teachers further and further - as I mentioned it too. There're also all the connections super teachers have.
What I thought different was just that these things that make the outstanding teachers super teachers are indeed significant though might not have to do with music directly. If having a super teacher is a golden ticket to something, by all means, a pro student should try everything to study with one of them.
Ppl learning the piano simply as a hobby don't really need those super teachers, of course. There're many outstanding teachers out there. Maybe you can call them "hidden gems". - even harder to find cos they're hidden!!
anyway... finding a good piano teacher's hard... (and I'm glad I have a good one now

)