I've written extensively on that subject, and I think early childhood is the leading factor. For example, I've heard from many spokespersons for various organizations. Mr. Forgues has written extensively on the interests that each association advocates. Some authors discuss neo-corporate interests, for example. In fact, all organizations want money so they can advance their own sectors. On the other hand, they don't agree on the importance of early childhood or, in particular, on increasing parent awareness in order then to encourage them to enrol their children in minority schools. However, everyone would benefit if we could really emphasize that. In overall terms, only 50% of the children of francophone minority communities attend French-language schools, although that figure comes from Statistics Canada's 2006 post-census survey on the vitality of official language minorities.
Consequently, I feel that the crucial factors are early childhood and education. Many encouraging points are also made in the white paper, which I recently read but hadn't read before I finished writing my article. It outlines some interesting aspects and, from what I understood, seems to single out early childhood.