To my knowledge, the only agency that publishes detailed, objective criteria for evaluation of skills in recreational diving classes is GUE. If you can't hold buoyancy within 5', or trim within 30 degrees, you have not reached the bar.
None of the main agencies, to my knowledge, write out criteria for a passing performance of a skill that are like that. I'm sure that, in instructor training, they see some examples of good and bad performance . . . but in the end, it's up to the instructor to decide what a passing performance is. And assume you have a student who has sat on the bottom of the pool and neatly performed a mask flood and clear, and has done the same, on her knees, in an OW dive. She has successfully cleared her mask twice, which is repeatably, and she has done it comfortably, and sitting on the bottom, which may be your definition of "in the manner of an open water diver". You pretty much have to pass her, even though, if she had to do this a third time while actually DIVING, everything might well come apart. This isn't just true in Australia, and it isn't just true with PADI. It's true all over.
We are very lucky to teach for a shop that allows us enough pool time to make sure every student has performed the major skills, like mask skills and air-sharing and regulator recovery, at least a dozen or more times before even going to OW. They do only get their four OW dives (or five, if they do the dry suit option), which is definitely marginal for producing an independent Puget Sound diver. But the vast majority of our students do well enough that we don't worry that they are going to hurt themselves while diving after class. (After all, I'm the poster child for how badly you would have to do to hurt yourself, so long as you don't panic -- I think I did almost everything you can do wrong.) I don't think I could possibly feel that way if we tried to get the whole class done in two days. Two weekends, as one of our local shops does it, would be a rock bottom minimum, and very stressful for me.
None of the main agencies, to my knowledge, write out criteria for a passing performance of a skill that are like that. I'm sure that, in instructor training, they see some examples of good and bad performance . . . but in the end, it's up to the instructor to decide what a passing performance is. And assume you have a student who has sat on the bottom of the pool and neatly performed a mask flood and clear, and has done the same, on her knees, in an OW dive. She has successfully cleared her mask twice, which is repeatably, and she has done it comfortably, and sitting on the bottom, which may be your definition of "in the manner of an open water diver". You pretty much have to pass her, even though, if she had to do this a third time while actually DIVING, everything might well come apart. This isn't just true in Australia, and it isn't just true with PADI. It's true all over.
We are very lucky to teach for a shop that allows us enough pool time to make sure every student has performed the major skills, like mask skills and air-sharing and regulator recovery, at least a dozen or more times before even going to OW. They do only get their four OW dives (or five, if they do the dry suit option), which is definitely marginal for producing an independent Puget Sound diver. But the vast majority of our students do well enough that we don't worry that they are going to hurt themselves while diving after class. (After all, I'm the poster child for how badly you would have to do to hurt yourself, so long as you don't panic -- I think I did almost everything you can do wrong.) I don't think I could possibly feel that way if we tried to get the whole class done in two days. Two weekends, as one of our local shops does it, would be a rock bottom minimum, and very stressful for me.