Are you a real teacher ?
I have some doubts when I read your posts. Serious and traditional teachers know that fingering is 50% of piano playing. I teach my kids to come back to the next lesson with right notes and right fingering, this is the ground for any further work .So you teach your kids pieces using 1 finger. How great. This way they will surely develop a secure piano technique.
No no no. Learning the notes requires 10/20 minutes intensive reading and writing everyday. There is no other way. No colors, no stickers. No miracle.
Real? What is reality any way?
Is he a teacher at all? Yes if he has one single student. That is the ultimate definition of a teacher: no student, no teacher.
More to the point: Is he a “good” teacher?
What is good anyway?
If the student leaves the lesson having learnt something, the teacher has fulfilled his role.
A teacher is ultimately a communicator.
Here are the rules of communication that every communicator must ultimately follow if communication is to take place:
1. A communicator must have a goal.
2. A communicator must keep changing his/her behaviour until s/he reaches his/her goal. (This implies that the communicator have a large enough repertory of behaviours at his/ her disposal and is able to switch between them).
3. A communicator is sensitive enough to know when the goal has been achieved and stop changing behaviours.
If a teacher is stuck in a teaching situation, that is the student is not learning, the reasons maybe related to one of the three items above:
1. The teacher has not established a clear enough goal – either to the student or to him/herself.
2. The teacher is too limited in his/her behaviour and is afraid/unable to try new possibilities (this applies both to teachers who only believe in teaching by fear as those that only believe in teaching by fun).
3. The teacher is too unobservant/insensitive to realise when s/he has actually achieved the lesson’s goal, and cannot stop him/herself.
Monk’s previous post (and many others) tell me that – according to the criteria above – he is indeed a superb teacher. He is constantly suggesting alternative behaviours that may (or may not) achieve the goals. It does not really matter if someone agrees of disagrees with his suggestions. It is an alternative, and for someone who is stuck it may well be the way out. If it is not, then for crying out loud, DO SOMETHING ELSE.
If you only have a hammer, you will have little success with screws. It is little use complaining that the screw is not responding to your traditional hammer (and from now on I swear I will only deal with nails). Get yourself a screwdriver!
And by the way, I do not believe in miracles: I rely on them.

Best wishes,
Bernhard.