Good points, but before they can move on to a trade school, they have to be able to meet the provincial curriculum.  Without it, they can't get into trade school.  I just spoke with a 40 year old guy, who after working as a labourer, decided to go back to get an electrician's ticket in trade school.  He said that the hardest thing was having to teach himself Gr. 11 math to get into trade school.  That, I would suggest is the rub.  

These groups, so eager to grab the educational reins need to do one thing;  stress the provincial curriculum, and keep the cultural material as electives.  If they fail in that, they fail their children to a life on the reserve, or their small community.  There are universities and law schools that might give aboriginal kids a pass, but the trade schools won't.