I don't think finishing a course qualifies anybody.
The real learning on good courses starts at home. A good course can show you the skill, and teach you how to use that skill. Often a lot of these skills require further home practise in order to actually master the skill rather then know the skill. That is part of what makes bushcraft so exciting I believe.
That's why I run a course where people can come and live using only this skills and no modern equipment. It really gives people the chance (I should say the need) to practise these skills and test them to their extreme.
The course set-up is easy. If the students don't manage to make a fire using natural resources only (Stone knife to carve, hand made cordage from plant fibers etc.), then we'll be cold... (Though I do give in often and light a fire if the students haven't managed all day...) So it goes for all necessary skills.
On average, it takes the group three days to set up camp, and have all the vitals sorted out (Shelter, Fire, Water and food) The rest of the course is then used to turn this survival camp into a comfortable camp. (Making mattressess, making backrests, more efficient pottery, etc, etc,...)
By the end of the week, the group is living much like a comunity of primitive people may have done. IE, we're settled into a daily routine to refresh supplies, and we have a lot of time to learn intricate skills and have fun in our primitive environment.
Even a course as advanced as that may not qualify a person for all challenges that may lie ahead... The situation could be so different then it was on the course. You could have a broken arm, be stuck in a snowstorm, etc..
This begs the next question, what's concidered "qualified"? I reckon you can't answer that question. If qualified means you could surive anywhere, then there wouldn't be one qualified person to have ever walked the Earth... Is it possible that being qualified in these skills is a state of mind??
Many regards,
Anthonio Akkermans