One of the things that I think people have argued that would maybe be useful is going to the high schools. Some of the people argue that apprentices are maybe not an attractive option to the kids. They talk about high school guidance counsellors who have all been to university, and therefore they kind of have this natural bias toward recommending that to their students, particularly those who are the most capable. Maybe there's some argument for having people from trades visit high schools.
I'm guessing it's a fairly cheap way and a way to explain that these options exist. It is a way of promoting them by giving students some of the numbers as to what they might expect to earn in this profession versus what they might expect to earn with a university degree. Then let students make an informed choice, rather than naturally seeming to gravitate toward university.
As a university professor, I'm not sure how much I want to push that, but certainly making students aware.... I think markets work best when the individuals in those markets have as much information as possible. I think that would be a natural thing to do.