Well, in my own Dojo I do my best to offer as much clarity as I can so that people would know what the Dojo is about and that they could choose if that is something they are interested in. It is very easy to put the blame on the student, that it is his fault that he doesn't understand something, but I say that "it takes two irresponsible drivers to make an accident". There is always the responsibility of both sides in each situation when something is wrong and that is why clarity is so important. Although it is also important to understand that each Sensei is a human being too and they need our support. We can't go about expecting them to be perfect and it's important to respect at least to a certain degree what they try to do and how they do it. So it is a delicate balance here.