Georgez has raised the usual issues when those who can afford a full time course decide they want to learn to fly.
On one hand they are the customers, and yet the ATOs are there to train them for the big bad world of aviation.

The customer must visit the establishments, speak not only to the staff, but to the customers(students) unfettered by management in hover mode.
The customers must recognise that they need sufficient grey matter to cope with the learning process, and be fully prepared for the aptitude testing.

The ATOs need to be fully transparent and open with the potential customer as to their potential to succeed. If the customer is assessed in the grades of "training risk", then the customer really needs to make an informed decision whether this style of course, or perhaps modular is the better option.
The ATOs also needs the courage to say NO, which all reputable establishments of course do, and not take money for what might be regarded as false pretences.
Regular progress checks are necessary to give additional support, as required, to those who are struggling.
Honesty is the key to success together with mutual respect.
Whilst all parties want a smooth passage throughout the course, it is critically important that the customer reads the legally binding contract very carefully. SIGN IN HASTE AND REGRET AS YOUR LEISURE.
Invariably it will be gently weighted in favour of the ATOs, in particular with regard contract termination, and what the customer will get back as a refund should STOP be called.
Go into any such relationship with your eyes fully open.