It sounds as though the problems started AFTER the student was poached! “Reverting” to bad habits which were presumably being addressed by the abandoned teacher.
Re payment: The thread I was thinking of was something on the theme of charging for missed lessons, or how to handle that situation, but it expanded to include a lot of useful related input. It may have been a thread in the Yahoo harplist rather than here – I follow both, so am not really sure, but apologies for any confusion I’ve caused.
Re a standard charter or agreement: I think it’s a great idea, but tend to feel as Barbara does that it’s probably a daydream to expect everyone to follow it. Those who most NEED to be controlled would probably run a mile.